Maximizing Mounjaro: Understanding How Long Your Pen Lasts After Opening

Introduction

Embarking on a health journey with a prescribed medication like Mounjaro can feel like gaining a powerful ally. This innovative treatment, containing tirzepatide, has become a significant tool for managing blood sugar levels in individuals with type 2 diabetes and is increasingly recognized for its role in weight management. However, like any precision instrument, its effectiveness hinges on careful handling and proper storage. You might be wondering, “how long does Mounjaro pen last after opening?”—a crucial question for ensuring every dose is as potent and safe as intended.

The nuances of medication storage, particularly for injectables, are not merely logistical details; they are fundamental to therapeutic success and patient safety. Incorrect storage can compromise the medication’s stability, reducing its efficacy and potentially leading to less predictable health outcomes. This guide is designed to empower you with comprehensive knowledge about Mounjaro pen storage, both before and after its initial use, ensuring you can manage your medication with confidence and clarity.

At TrimRx, our journey began with a shared vision to help individuals embrace healthier lifestyles by merging cutting-edge telehealth innovations with effective weight loss solutions. We understand that sustainable weight loss should be achieved through science, empathy, and a transparent approach. Our platform is a user-friendly and supportive space where individuals receive personalized, medically supervised care—all designed to make sustainable weight loss attainable and tailored to the individual. This commitment extends to providing clear, trustworthy information about the medications that are part of a personalized plan, like Mounjaro, Zepbound, Ozempic, and our compounded options.

This article will delve into the specific guidelines for storing Mounjaro pens, explore the implications of various environmental factors, and provide practical advice for travel and disposal. By the end, you will have a deep understanding of how to protect your Mounjaro pens, ensuring they remain effective throughout their lifespan. We aim to offer insights that go beyond basic instructions, helping you integrate this knowledge seamlessly into your daily routine as you pursue your health goals with medications delivered through FDA-registered and inspected pharmacies.

The Foundation of Effectiveness: Why Proper Storage Matters

The journey to better health often involves advanced medications that are sensitive to their environment. Mounjaro, with its active ingredient tirzepatide, is a sophisticated therapeutic agent designed to work precisely within the body. Its complex molecular structure requires specific conditions to maintain its integrity, potency, and safety. Disregarding these storage guidelines can lead to a degradation of the medication, rendering it less effective or potentially compromising your well-being.

Understanding Mounjaro and Its Sensitivity

Mounjaro, delivered via a single-dose prefilled pen, contains tirzepatide, a dual GIP and GLP-1 receptor agonist. This means it mimics the effects of natural hormones in your body, which play key roles in regulating blood sugar and appetite. The delicate proteins within tirzepatide are susceptible to extreme temperatures, light, and physical stress. For instance, freezing can denature the protein structure, making the medication inert or even harmful. Similarly, excessive heat can accelerate degradation, diminishing its intended therapeutic benefits.

When a medication’s chemical composition changes due to improper storage, its ability to interact effectively with the body’s receptors can be impaired. This not only means you might not receive the full benefit of your prescribed dose, but it also introduces variability into your treatment plan, making it harder to achieve consistent results in blood sugar management or weight loss. Therefore, adhering to storage instructions is a cornerstone of responsible medication management.

TrimRx’s Commitment to Medication Integrity

At TrimRx, we believe that transparent and supportive care is paramount. Our brand is empathetic, innovative, trustworthy, supportive, results-oriented, and personalized. We offer compassionate care that respects every individual’s unique journey by combining advanced medical science with modern technology. This means ensuring that when you receive your personalized treatment, you have all the necessary information to maintain its integrity. We partner exclusively with FDA-registered and inspected pharmacies for the shipping of weight loss medications, underscoring our commitment to safety and quality from the moment your prescription is filled until it reaches your hands.

Our comprehensive service includes doctor consultations, necessary lab work, the medication itself, unlimited support throughout your journey, and convenient shipping—all with no hidden fees. We emphasize that our approach remains consistent regardless of dosage changes, providing a stable and reliable foundation for your weight loss efforts. This dedication to excellence extends to the advice we provide, ensuring you have the knowledge to properly store and manage your medication, whether it’s Mounjaro, Zepbound, Ozempic, or our expertly compounded alternatives. If you’re ready to explore a personalized approach to weight loss and see if medications like these are right for you, we encourage you to [take our free assessment quiz].

Unopened Mounjaro Pens: Storage Guidelines

Before a Mounjaro pen is used for the first time, its storage requirements are quite specific to maintain its stability and extend its shelf life. Understanding these guidelines is crucial to ensure that the medication is effective when you are ready to begin your treatment.

Refrigeration: The Ideal Environment

For optimal preservation, unopened Mounjaro pens should primarily be stored in a refrigerator. The recommended temperature range is 36°F to 46°F (2°C to 8°C). This cool, consistent environment helps to protect the delicate tirzepatide molecules from degradation.

To ensure your pens are stored correctly within the refrigerator:

• Location Matters: Avoid storing pens in the refrigerator door, as temperatures in this area can fluctuate more frequently due to opening and closing. The middle shelves, away from cooling vents, are generally more stable.
• Protection from Light: Mounjaro pens are sensitive to light. Always keep them in their original carton until you are ready to use them. This carton acts as a protective barrier, shielding the medication from light exposure that could compromise its stability.
• Avoid Freezing: Under no circumstances should Mounjaro be frozen. Freezing temperatures can permanently damage the medication, rendering it ineffective and potentially unsafe. If a pen has been frozen, even if it has thawed, it must be discarded. Always check your pen to ensure it hasn’t frozen before use.

When stored correctly in the refrigerator, an unopened Mounjaro pen can remain stable until the expiration date printed on its packaging, which can be up to 24 months from the date of manufacture.

Room Temperature Storage: Flexibility for Up to 21 Days

While refrigeration is the preferred long-term storage method for unopened Mounjaro pens, there is a limited window during which they can be stored at room temperature. An unopened Mounjaro pen can be kept unrefrigerated for a period of up to 21 days, provided the temperature does not exceed 86°F (30°C).

This flexibility is particularly useful for short-term travel or if you accidentally leave a pen out of the refrigerator for a brief period. However, it’s a strict limit:

• Time Limit is Crucial: If an unopened pen has been stored at room temperature for more than 21 days, it must be discarded, even if the medication still appears normal and the expiration date has not passed. The effectiveness cannot be guaranteed beyond this timeframe.
• Temperature Watch: Always ensure the room temperature does not exceed 86°F (30°C). Exposure to higher temperatures, such as leaving it in a hot car, can rapidly degrade the medication and shorten its viability significantly.

It is important to note that while the general Mounjaro pen has a 21-day room temperature limit for unopened pens, some specific presentations, like the Mounjaro KwikPen, may allow for slightly longer (up to 30 days) for unused pens stored unrefrigerated, as long as the temperature doesn’t exceed 30°C. Always refer to the specific instructions provided with your particular Mounjaro product. Our team at TrimRx ensures you receive the most current and accurate information for the medications we facilitate through our trusted pharmacy partners.

Protecting Your Pens from Environmental Factors

Beyond temperature, other environmental factors can impact your Mounjaro pens:

• Away from Heat Sources: Keep pens away from direct heat sources such as radiators, direct sunlight, or ovens.
• Humidity: While not as critical as temperature, avoid excessively humid environments like bathrooms, where steam can contribute to fluctuations.
• Out of Reach: Always store Mounjaro, and all medications, out of the sight and reach of children and pets to prevent accidental exposure or injury. Using an FDA-approved sharps container for used pens is also part of this safety protocol.

Properly storing your unopened Mounjaro pens ensures that you maintain the integrity of your medication, laying the groundwork for a successful and safe treatment experience. This careful approach aligns with our dedication at TrimRx to providing truly personalized and effective weight loss solutions.

Once Opened: How Long Does a Mounjaro Pen Last?

The core question, “how long does Mounjaro pen last after opening?”, primarily refers to the period during which a pen that has been used for its first dose remains viable for subsequent doses. For the Mounjaro KwikPen, which is designed for multiple weekly doses from a single pen, specific guidelines apply once it has been opened or first used.

The Critical 30-Day In-Use Period for KwikPens

Once you administer the first dose from a Mounjaro KwikPen, a new countdown begins. This “in-use” period dictates how long the pen can be kept and used for your subsequent weekly injections. A used Mounjaro KwikPen can be stored at room temperature (up to 86°F or 30°C) for up to 30 days.

This 30-day window is critical and overrides the original expiration date if the pen is opened closer to that date. Here’s what you need to know:

• Strict Time Limit: You must discard the KwikPen 30 days after its first use, regardless of whether there is still medication left inside. This is a crucial safety measure to ensure the medication’s stability and effectiveness.
• Four Weekly Doses: A Mounjaro KwikPen is designed to deliver four weekly doses. This means that if you adhere to a consistent weekly injection schedule, the pen will be used up within this 30-day window. If you miss a dose or inject less frequently, you might still have medication remaining after 30 days, but it must still be discarded. Attempting to inject leftover medicine after this period could result in an incomplete dose or a compromised medication.
• Temperature Flexibility During Use: During this 30-day in-use period, the Mounjaro KwikPen offers remarkable flexibility. It can be stored continuously at room temperature (up to 30°C). Interestingly, if the KwikPen is inadvertently placed back in the refrigerator (between 2°C to 8°C) during this 30-day period, you can continue to use it. Data indicates that cycling the Mounjaro KwikPen between refrigerated and room temperature conditions does not negatively impact product quality during this specific 30-day in-use period.
• Post-Injection Care: After each injection, it is essential to remove the needle and replace the pen cap. This helps protect the medication from contaminants and ensures the pen is safely stored until the next dose.

This distinct 30-day “after opening” guideline for the Mounjaro KwikPen is a key piece of information for managing your medication effectively and safely. Our personalized approach at TrimRx emphasizes providing you with clear instructions and continuous support for every aspect of your weight loss journey, including proper medication handling. To learn more about how our structured programs can support your unique needs, including access to medications like Mounjaro, we invite you to [take our free assessment quiz].

Beyond the Initial Use: Maintaining Efficacy

Consistent adherence to these post-opening storage instructions is vital for maintaining the efficacy of your Mounjaro. The chemical integrity of tirzepatide is sensitive, and once the sterile seal is broken with the first use, factors like air exposure and temperature become even more significant.

• Avoid Contamination: Always ensure your hands are clean when handling the pen, and promptly recap it after use to minimize exposure to air and potential contaminants.
• Visual Inspection: Before each use, visually inspect the medication in the pen. It should be clear and colorless to slightly yellow. Do not use the pen if the medicine is cloudy, discolored, or contains particles. This could indicate degradation or contamination.
• Regular Schedule: Maintaining a regular injection schedule helps ensure you utilize the medication within its optimal in-use window, preventing unnecessary waste and ensuring consistent therapeutic levels in your body.

By diligently following these guidelines for how long a Mounjaro pen lasts after opening and how it should be stored during its active use, you play an active role in the success of your treatment. This proactive approach is a hallmark of the supportive and results-oriented care we champion at TrimRx.

Decoding Expiration Dates: A Key to Safety and Efficacy

Beyond the specific storage guidelines for unopened and in-use pens, every Mounjaro pen comes with an expiration date. This date is not merely a suggestion; it is a critical marker determined by rigorous scientific testing, ensuring the medication’s integrity.

What Expiration Dates Signify

The expiration date printed on your Mounjaro packaging signifies how long the medication is guaranteed to remain stable. “Stable” means that it maintains its full strength, quality, and purity when stored according to the manufacturer’s instructions. Pharmaceutical companies conduct extensive stability testing under various conditions to establish these dates, ensuring that the medication will deliver its intended effect up to that point.

• Manufacturer’s Guarantee: The expiration date is essentially the manufacturer’s promise that, until this date, the medication will perform as expected if properly stored.
• Scientific Basis: These dates are not arbitrary. They are backed by scientific data demonstrating the medication’s chemical stability over time. For Mounjaro, when stored at 2°C to 8°C, its expiration date is typically 24 months from the date of manufacture.

The Risks of Using Expired Medication

Using expired medication, including Mounjaro, carries significant risks and is strongly advised against. While some medications might merely lose potency beyond their expiration date, others can undergo chemical changes that make them harmful or ineffective.

• Decreased Effectiveness: The most common risk is that the medication will be less effective. Over time, the active ingredients can degrade, meaning you might not receive the full therapeutic dose, which could lead to suboptimal blood sugar control or reduced weight loss benefits.
• Potential Harm: In some cases, degraded medications can produce harmful byproducts or become contaminated, posing a direct risk to your health. While Mounjaro is generally stable, the risk of using any medication past its expiration date is not worth taking.
• No Guarantee of Safety: Once the expiration date has passed, there is no guarantee that the medication will be safe and effective. If your Mounjaro pen has expired, do not use it. Safely discard it in an FDA-approved sharps container and obtain a new prescription refill.

Always check the expiration date on your Mounjaro pen before each use, in addition to observing the 21-day or 30-day post-refrigeration/post-opening guidelines. Integrating this simple check into your routine is a vital step in responsible medication management, ensuring your health journey is supported by effective and safe treatments. At TrimRx, we equip you with comprehensive knowledge to manage every aspect of your personalized weight loss program, including the proper handling and usage of your medications.

Navigating Common Storage Questions and Scenarios

Even with clear guidelines, practical scenarios often raise further questions about Mounjaro storage. Addressing these common concerns helps to reinforce best practices and prevent accidental compromises to your medication.

What Happens If Mounjaro Freezes?

Freezing is one of the most detrimental conditions for Mounjaro. The delicate protein structure of tirzepatide is highly susceptible to freezing temperatures.

• Irreversible Damage: If Mounjaro freezes, the drug is no longer safe or effective to use. Freezing can cause irreversible degradation of the active ingredient, altering its chemical composition and rendering it inert or potentially harmful.
• Do Not Use: Even if the pen thaws and the liquid appears normal, the medication has been compromised. You must not use a Mounjaro pen that has been frozen. It should be safely discarded in an FDA-approved sharps disposal container.

Always be vigilant to prevent freezing. Avoid storing Mounjaro in freezer compartments, near ice makers, or in areas of the refrigerator where temperatures are known to drop below freezing (0°C or 32°F).

Is Warming Mounjaro Before Injection Necessary?

A common question for injectable medications stored in the refrigerator is whether they need to be brought to room temperature before injection to reduce discomfort.

• Not Required: For Mounjaro, it is not necessary to warm the pen to room temperature before use. The medication is safe to inject directly from the refrigerator.
• Personal Preference: However, some individuals find that injecting cold medicine can cause a stinging sensation or discomfort. If this is the case for you, you can take your Mounjaro pen out of the fridge approximately 30 minutes before your dose to allow it to warm up slightly. This brief period out of refrigeration, within the overall storage guidelines, will not harm the medication.

Always ensure the pen has not been at room temperature beyond its allowed limits (21 days for unopened, 30 days for in-use KwikPen) before considering this optional step.

Accidental Room Temperature Exposure: What to Do?

Life happens, and sometimes a Mounjaro pen might inadvertently be left out of the refrigerator longer than intended. Understanding the specific limits is key to deciding whether the medication is still viable.

• Unopened Pens: An unopened Mounjaro pen can be stored unrefrigerated for up to 21 days at temperatures not exceeding 86°F (30°C). If it has been out of the refrigerator for longer than 21 days, it must be discarded, even if it hasn’t been used.
• In-Use KwikPens: Once a Mounjaro KwikPen has been opened (first used), it can be stored at room temperature (up to 86°F or 30°C) for up to 30 days. This 30-day clock starts from the first use, not from when it’s taken out of refrigeration. If an in-use KwikPen remains beyond 30 days from its first use, it must be discarded.

The critical takeaway is to meticulously track the time your pens spend outside the recommended refrigerated environment. If you are unsure or have exceeded these limits, it is always safer to dispose of the pen and use a new one. Your health and the efficacy of your treatment are paramount. Our team is dedicated to supporting your understanding of these guidelines, providing clarity and confidence in your personalized weight loss journey through TrimRx.

Traveling with Mounjaro: Ensuring Your Medication Stays Safe

Travel can be a rewarding part of life, but it adds another layer of consideration for individuals managing chronic conditions with injectable medications like Mounjaro. Ensuring your pens remain at the correct temperature and are handled properly while on the go is vital for maintaining their effectiveness.

Preparing for Your Journey

Thoughtful preparation can prevent common travel-related medication mishaps:

• Carry-On is Key: Always pack your Mounjaro pens in your carry-on luggage. Checked bags are at risk of being lost, delayed, or exposed to extreme temperatures in the cargo hold (which can be very cold or very hot), potentially compromising your medication. Having your medication with you ensures it stays within a controlled environment and is accessible.
• Temperature Control for Longer Trips: While unopened Mounjaro pens can be at room temperature for up to 21 days (up to 86°F/30°C), and in-use KwikPens for up to 30 days (up to 86°F/30°C), for longer journeys or travel through warm climates, consider using an insulated cooler bag with ice packs. Ensure the pens do not directly touch the ice packs to prevent freezing. Upon arrival at your destination, place any unopened pens back into refrigeration if you intend to store them for longer than the room temperature allowance.
• Original Pharmacy Label: Keep your medication in its original packaging with the pharmacy label clearly visible. This helps with identification at security checkpoints and serves as proof of prescription.

Navigating Airport Security

The Transportation Security Administration (TSA) has specific guidelines for traveling with medically necessary liquids and syringes:

• Declare Your Medication: When going through security, declare your Mounjaro pens and any associated syringes to the TSA agent. Medicines, especially liquids exceeding 3.4 ounces (100 milliliters), need to be screened separately from other items.
• Separate Screening: You will likely need to remove your medication from your carry-on bag for separate screening. TSA typically screens medications by X-ray, but you can request a visual inspection if you prefer.
• Syringes: Syringes are permitted when accompanied by an injectable medication. Having the pharmacy label on the box of your Mounjaro pens helps to confirm the medical necessity of the syringes.

International Travel Considerations

If your travels take you beyond the borders of the United States, additional precautions are necessary:

• Check Local Regulations: Rules for traveling with prescription medications can vary significantly between countries. Before your trip, check with the specific airline and the embassy or consulate of your destination country to understand their regulations on controlled substances or injectable medications.
• Doctor’s Note: Carrying a letter from your doctor that explains your medical condition, the necessity of the medication, and the dosage can be very helpful for international travel, especially if translated into the local language.

Traveling with Mounjaro requires attention to detail, but with proper planning, you can ensure your medication remains safe and effective, allowing you to focus on your health and your journey. At TrimRx, we champion a supportive environment where comprehensive guidance extends to all aspects of your life, enabling you to manage your health goals confidently, no matter where you are. When you are ready to explore a weight loss plan that considers all your needs, we invite you to [take our free assessment quiz] to determine your eligibility for personalized programs with medications like Mounjaro, Zepbound, and more.

The Broader Picture: A Holistic Approach to Weight Management

Understanding how long your Mounjaro pen lasts after opening and adhering to precise storage guidelines is a vital component of successful weight management and blood sugar control. However, it’s just one piece of a much larger, more integrated puzzle. At TrimRx, we believe that true, sustainable health transformation emerges from a holistic, personalized approach that combines effective medication with comprehensive support and a deep understanding of individual needs.

Our philosophy is rooted in the belief that weight loss is not a one-size-fits-all endeavor. It requires a nuanced strategy that addresses both the physiological and practical aspects of your journey. The careful management of medications like Mounjaro, Ozempic, Zepbound, and our personalized compounded Semaglutide and Tirzepatide formulations, delivered through FDA-registered and inspected pharmacies, is seamlessly integrated into this broader framework. We provide compassionate care that respects every individual’s unique path, combining advanced medical science with modern technology to deliver results.

Personalized Paths to Wellness with TrimRx

For many, prescription weight loss medications are a transformative tool, offering significant support in achieving health objectives. If you’re considering a path that includes these advanced therapies, our personalized assessment is your starting point.

Through our structured program, you gain access to:

• Expert Medical Consultations: Our affiliated healthcare professionals provide thorough evaluations to determine if prescription medications, such as Compounded Semaglutide, Oral Semaglutide, Ozempic®, Compounded Tirzepatide, Oral Tirzepatide, Mounjaro®, Zepbound®, or Wegovy®, are suitable for you. We focus on medically supervised care that is tailored to your unique health profile and goals.
• Necessary Lab Work: Comprehensive lab testing helps us understand your baseline health and monitor your progress, ensuring your treatment plan is safe and effective.
• Medication Management: We facilitate access to your prescribed medication, delivered directly from our FDA-registered and inspected pharmacy partners. You’ll receive clear instructions on administration and storage, ensuring you’re confident in managing your treatment, including knowing precisely how long your Mounjaro pen lasts after opening.
• Unlimited Support: Your journey is not one you take alone. Our team provides ongoing support, guidance, and answers to your questions, creating a truly supportive space for your weight loss efforts. Our commitment to transparent service means you always know what to expect.

To discover if a personalized weight loss program with prescription medication is the right choice for you, we encourage you to [take our free assessment quiz] today. This quiz is the first step toward a tailored plan that empowers you to reach your health aspirations.

Supporting Your Journey with Quick-Access Solutions

Beyond prescription medications, we also offer quick-access supplements designed to complement your wellness journey and support overall health. These supplements do not require a quiz or prescription, making them readily available to provide immediate support for your metabolic health and weight loss efforts.

• GLP-1 Daily Support: This supplement is formulated to provide daily assistance for your body’s natural metabolic processes, working synergistically with your overall health regimen. It’s a convenient way to bolster your well-being. Explore the benefits of our [GLP-1 Daily Support] supplement and add it to your routine today.
• Weight Loss Boost: Designed to give your body an extra edge, our Weight Loss Boost supplement is crafted to support healthy metabolism and energy levels, contributing to your weight management goals. Find out more about how our [Weight Loss Boost] can enhance your journey.

At TrimRx, we provide you with a spectrum of clinically proven options, from highly personalized, medically supervised programs to readily available support supplements, all dedicated to safe, effective weight loss and individualized care. We believe in empowering you with choices and comprehensive information to navigate your path to a healthier, more vibrant life.

Conclusion

Understanding how long a Mounjaro pen lasts after opening, along with all the associated storage guidelines, is a fundamental aspect of successfully managing your health journey. We’ve explored the critical importance of refrigeration for unopened pens, the specific 30-day in-use period for the KwikPen, the non-negotiable nature of expiration dates, and practical considerations for travel and accidental exposure. By meticulously adhering to these guidelines, you safeguard the integrity, efficacy, and safety of your medication, ensuring that each dose of Mounjaro contributes optimally to your blood sugar management and weight loss goals.

At TrimRx, our core mission is to empower you with the knowledge, tools, and personalized support necessary for sustainable health transformations. We champion a transparent, empathetic, and science-backed approach to weight loss, delivering solutions through FDA-registered and inspected pharmacies that prioritize your safety and well-being. Whether your path involves advanced prescription medications like Mounjaro, Zepbound, or Semaglutide, or you’re seeking immediate support through our quick-access supplements, we are here to guide you every step of the way.

Your journey to a healthier lifestyle is unique, and it deserves a partner dedicated to your success. We encourage you to take proactive steps in managing your health, starting with a clear understanding of your medications. If you’re ready to explore how a personalized, medically supervised weight loss program can align with your aspirations, we invite you to [take our free assessment quiz]. For immediate support to complement your wellness efforts, consider our expertly formulated [GLP-1 Daily Support] or [Weight Loss Boost] supplements. Together, we can unlock your potential for a healthier, more vibrant future.

Frequently Asked Questions (FAQ)

Q1: Can I store my Mounjaro pen at room temperature indefinitely once I’ve started using it?

A1: No. Once a Mounjaro KwikPen has been opened (first used), it can be stored at room temperature (up to 86°F or 30°C) for a maximum of 30 days. After this 30-day period, or once four weekly doses have been administered, the pen must be discarded, even if there is medication remaining. Unopened Mounjaro pens can only be stored at room temperature for up to 21 days before they must be used or discarded.

Q2: What should I do if my Mounjaro pen accidentally freezes?

A2: If your Mounjaro pen has been frozen, you must not use it. Freezing temperatures can permanently damage the medication’s delicate components, rendering it ineffective and potentially unsafe. Even if the pen thaws, the medication’s integrity is compromised. Safely dispose of the frozen pen in an FDA-approved sharps container and use a new, properly stored pen for your dose.

Q3: Is it necessary to warm my Mounjaro pen to room temperature before injecting?

A3: No, it is not necessary to warm your Mounjaro pen before injection; it is safe to use directly from the refrigerator. However, if injecting cold medicine causes discomfort or stinging, you may take the pen out of the refrigerator approximately 30 minutes before your planned injection to allow it to warm slightly. Ensure this brief period at room temperature does not exceed the overall 21-day (unopened) or 30-day (in-use KwikPen) limits.

Q4: How do I properly dispose of a used or expired Mounjaro pen?

A4: Immediately after use, and for any expired or compromised pens, you should dispose of your Mounjaro pen in an FDA-approved sharps disposal container. This prevents accidental needle sticks or misuse by others. Never put used or expired pens directly into household trash. Many doctors’ offices, hospitals, pharmacies, and medication suppliers offer sharps containers, or you can purchase one online.