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Mounjaro® common side effects: how long do they last?

PlushCare Content Team
Written by PlushCare Content Team
Alisha-Goodrum
Medically reviewed by Alisha Goodrum, MD
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Mounjaro Side Effects

*Prescriptions are provided at the doctor’s discretion. Learn more about our controlled substances policy and our prescription discount card. 

Any time you take a prescription medicine; it is possible to experience unwanted or negative events – or side effects. These can be mild or severe. Different people may have different reactions. Also, these reactions (or side effects) can change over time.  

  

If you are taking Mounjaro® for type 2 diabetes and implementing a healthy diet and exercise, you may enjoy improved blood sugar and lower A1C. You may also experience weight-loss as an added benefit. Along with these positive results, however, you may also face some potential risks.  

  

Understanding your potential risk factors is important. Here’s information related to possible common and more serious side effects of Mounjaro®.

Most common side effects of Mounjaro®

People taking Mounjaro® most commonly may experience the following symptoms1. This does not mean you will have these if you take Mounjaro®. But they may occur. 
Nausea Diarrhea
Decreased appetite
Vomiting
Constipation
Indigestion
Stomach pain

How long will Mounjaro® side effects last?

In some cases, dosing changes may impact Mounjaro® side effects. 

When you take this medication, your doctor will typically start with the lowest dose, and then move to a higher dose until you find the one that is right for you. You may be more likely to experience some side effects when you increase your Mounjaro® doses. Sometimes, these side effects may lessen after your body adjusts to the medication.  

From Eli Lilly and Company manufacturer of Mounjaro®:

  • In studies, most nausea, vomiting, and diarrhea events occurred while the dose of Mounjaro® was increased. These events decreased over time. 
  •  In studies, gastrointestinal (GI) side effects were more common in people taking Mounjaro® than people taking placebo, and people taking Mounjaro® were more likely to stop treatment because of these side effects.1

Possible serious side effects of Mounjaro®

While some Mounjaro® side effects are mild, others can be serious and may lead to a medical emergency. People with certain conditions may be at higher risk. 

Risk of tumors in the thyroid

Mounjaro® has a boxed warning2 about the possible risk of tumors in the thyroid, including thyroid cancer. This is the highest safety-related warning that medications can have assigned by the Food and Drug Administration. It is meant to alert you and your healthcare provider to any risks. Your healthcare provider can then use this information to make prescribing decisions tailored for you. 

  

You can play an important role by telling your provider if you notice: 

  • A lump or swelling in your neck 
  • Hoarseness 
  • Trouble swallowing 
  • Shortness of breath   

 

Also, do not use Mounjaro® if: 

  • You or any of your family have ever had a type of thyroid cancer called medullary thyroid carcinoma (MTC). 
  •  You or a family member have Multiple Endocrine Neoplasia syndrome type 2 (MEN 2). 
  • You are allergic to Mounjaro® or any of the ingredients in Mounjaro®. 

Possible Mounjaro® effect on birth control and more

Mounjaro® may impact the effectiveness of birth control pills taken by mouth. Talk with your healthcare provider about this if you take this type of medication. A different form of birth control may be best to take while taking Mounjaro. Also talk with your doctor if you are pregnant, planning to become pregnant, breastfeeding, or planning to breastfeed. 

  

Your healthcare provider can help you better understand these and other potential side effects.  

Other serious side effects

Below are some other possible serious side effects that may occur with Mounjaro®.1,2  

  •  Inflammation of the pancreas (pancreatitis) 
  •  Low blood sugar (hypoglycemia) 
  •  Serious allergic reactions 
  • Kidney problems (kidney failure) 
  •  Severe stomach problems  
  •  Changes in vision 
  •  Gallbladder problems 

  

Depending on your symptoms, you may need to stop taking Mounjaro® and get help right away if certain serious side effects occur. Be sure to talk with your provider about any side effects that bother you or persist. 

  

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Online Mounjaro prescriptions

Mounjaro® can provide an effective treatment option for many people with type 2 diabetes. Still, it is important to understand the possible side effects, pros, and cons of taking Mounjaro®. Talking with your healthcare provider about your treatment goals, health history, and other medicines you take can help you better understand your risk factors and options.  

  

If you are seeking a prescription for Mounjaro® online, our team of professional online doctors is available to assist you. 

3 simple steps to discuss your online Mounjaro® prescription

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Step 1

Book a visit with a doctor to discuss Mounjaro®

During your first visit, your PlushCare doctor will review your medical history and health goals.
How It Works Step 2B
Step 2

Talk to a physician regarding your Mounjaro® prescription and weight loss goals.

Visit with a doctor on your smartphone or computer. Often, lab work is required, and they’ll send an order to your preferred lab. Once your results are available, your doctor will review them with you and discuss treatment options.
How It Works Step 3
Step 3

Follow up with your doctor to discuss prescription, if you qualify.

Prescriptions are provided at the doctor’s discretion. If medication is prescribed, it will be sent to your pharmacy of choice. Learn more about the cost of medication and whether a prior authorization is needed on our weight loss page.

Mounjaro® prescription pricing details

Join our monthly membership to speak with a physician about starting or refilling a Mounjaro® prescription and enjoy discounted visits*

30 days of free membership

  • Same-day appointments 7 days a week
  • Unlimited messages with your Care Team
  • Exclusive discounts on lab tests
  • Free memberships for your family
  • Cancel anytime

Paying with insurance

$19.99

First month free

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Copay

Visit price with insurance

Often the same as an office visit. Most patients with in-network insurance pay $30 or less! We accept these insurance plans and many more:
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Paying without insurance

$19.99

First month free

+

$129

Visit price without insurance

Initial visits are $129.

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*If we're unable to treat you, we'll provide a full refund. Please note that any medication or lab work costs are not included. Please refer to our refund policy for additional information.

Sources:

PlushCare is dedicated to providing you with accurate and trustworthy health information.

  1. Once-weekly Mounjaro®: Managing possible side effects. Accessed October 4, 2024. https://Mounjaro®.lilly.com/how-to-use-Mounjaro®#possible-side-effects 
  2. Nih.gov. Box Warning. Accessed October 4, 2024. https://www.ncbi.nlm.nih.gov/books/NBK538521/



PlushCare content is reviewed by MDs, PhDs, NPs, nutritionists, and other healthcare professionals. Learn more about our editorial standards and meet the medical team. The PlushCare site or any linked materials are not intended and should not be construed as medical advice, nor is the information a substitute for professional medical expertise or treatment.