Mounjaro Side Effects (Top voted first)

This is my 4th month on Mounjaro and my 1st month on the 7.5 mg. My A1C is 5.7, down from 10. It is working great but the side effects from the 7.5 mg are rough. Extreme nausea, vomiting and diarrhea. My doctor wants me to increase to 10 mg but I can barely handle the 7.5 mg. Has anyone else experienced these side effects and do they eventually go away?

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My very first dose of Mounjaro 2.5, I experienced awful neck pain and was extremely tired. I thought maybe the neck pain was just a coincidence. The second injection of 2.5 was fine. It just made me very constipated. I waited 12 days for my 3rd injection because I was still feeling very full and constipated. On my 3rd injection, I developed swelling at the base of my neck on both sides. The swelling is about the size of half a baseball on both sides. I now have pain in my jaw line, down my neck into my chest and back of my neck. The swelling is still there after 7 days. I did go to the ER, they checked my thyroid and lymph nodes and my blood work. All came back normal. They have no explanation as to why this is happening. Has anyone else had any similar symptoms?

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Typically, once you are on a steady dose of a medication, the side effects hit their peak after about 4 to 5 weeks of taking it, once your body gets used to the medication, and dosage, then they begin to taper off in severity, before going away. If yours are severe, or do not go away, you should consult your doctor as the medication, or dosage may not be right for you.

The FDA does list Mounjaro as being known to cause the side effects that you've all described, along with headaches, loss of appetite, and dizziness.

Ref: Mounjaro Information

How are you doing, now?

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Re: Ken (# 8)

I am experiencing the same thing. Ive been on 2.5 mg for 2 days and the belching is extreme. Mainly starts in the evening thru the night.

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Re: Fran (# 6)

Switched from Ozempic to Mounjaro. 24 hours in after my first dose, I had extreme tenderness in my neck, back, face and armpits. I found on Reddit that there are a lot of people that have also had similar symptoms. I'll be calling my doc in the morning.

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This is my first month (2nd week) taking 5mg of Mounjaro. Still nauseous on day 4, but better than days 1-3. My main concern is some itching in my mouth. No swelling, just slight itchiness in my mouth, that started soon after the injection. Should I be worried it will increase with dosage increases?

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One day after my second dosage of Mounjaro at 2.5mg I am experiencing extreme sleepiness along with excessive burping and gas. Is this normal, and will it pass?

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Re: VerFree (# 4)

Interesting that side effects would present after 4-5 weeks; my doctor predicted that they would surface after an increase in dosage. I handled 2.5 and 5 mg. well. Vomiting and diarrhea hit after the 4th dose of 7.5 mg. Ugh! Rough stuff. After three weeks, I stopped it. I'm taking a month long break now and plan to start over with 2.5 mg.

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Re: Nick (# 13)

Try incorporating protein and a little healthy fat (like the avacado you mention) and skip the other carbs. Carbs will contribute to hypoglycemia.

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Re: Tina (# 19)

When I have side effects, they appear 2-4 days later and last about 4 hours (vomiting and diarrhea). I stopped 7.5 for a month and have since started over with 2.5. So far, no bad side effects but no appetite suppression, either. I’m going to try 5 mg. this weekend.

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I took Mounjaro .25 for 8 weeks and now in my 5th week of .5. I’ve experienced a great deal of nausea along with many of the issues that others mention. I’ve lost 25 lbs. That’s why I’m still trying for 3 more weeks. My question is about being cold. I’m usually the hottest person in the room and have been my whole life. Now I have to bundle up at night and sometimes have to put on a long sleeve shirt in the day. Wondering if anyone else experienced this?

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I am just ending the 7.5mg injections as well and the side effects (nausea, vomiting, and extreme diarrhea) have me basically incapacitated! I’m down only 14 lbs (thought I would have been down more by now). I don’t think I can continue with a higher dosage.

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Re: Teri (# 1)

7.5 was the worst for me. The 10mg was better. Just started 12.5 and the nausea is back but no where near as bad as the 7.5. I barely have an appetite.

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I've been on Mounjaro for 3 months. I started with 5 mg and am now at 12.5 mg when I started getting a rash, severe itching and now bruising at the injection site.

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Re: Queen bee (# 5)

Im on 12.5 and am having the same reactions...never happened with other doses

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I've been taking Mounjaro since December and I haven't had any side effects. I have had great results with my A1C going from 6.2 to 5.0 and I have lost 34 pounds. I have very little appetite which is a good thing for me.

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I've been on Mounjaro for 6 months and am down 35 pounds. However, over the last two weeks my lower back has been awful when I stand up and I have never had back problems prior to this. Has anybody else had a similar experience while taking Mounjaro?

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I started Mounjaro 2.5 this past Sunday. Have experienced horrible abdominal pain, vomiting, & diarrhea. Have been eating small bites of fruit in the late morning and avocado sandwiches to maintain eating and not experience any side effects. I ate a half a salad Tuesday night and immediately within 2 hours the abdominal pains, diarrhea and vomiting kicked in. Also experienced hypoglycemia immediately. Have you'll been prescribed anything to overcome these side effects besides OTC meds, Pepto, Imodium, Tylenol or Pepcid? Thinking of giving up as Sunday is my second injection.

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I am on my third week of Mounjaro 7.5 mg and have the worse stomach cramping, belching and nausea. My doctor recommended taking a probiotic but it hasn’t helped with the side effects. I really am considering quitting the medication even though it is helping my A1C numbers, down to 5.6 after being 6.7. I have lost 20lbs but is it worth this constant burping, gas and stomach pain?

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Anyone have problems when stopping Mounjaro? Stomach, digestive, bladder or kidneys?

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I'm on my 2nd month of Mounjaro and am ready to start the 5mg dose, but am anxious about side effects. Wasn't too bad at the 2.5mg dose, just queasy and constipated. Type 2 diabetic just trying to lower my A1C. Will a 5mg dose increase the risk of side effects?

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