Tirzepatide (Mounjaro)

FDA Approved

Based on analysis of real user experiences, Tirzepatide (Mounjaro) is viewed very positively, with many users reporting significant weight loss and improved blood sugar control. It is often compared favorably to similar medications, with high satisfaction levels overall. While side effects such as nausea and appetite suppression are commonly mentioned, most users feel the benefits outweigh the downsides.

Commonly Reported Benefits

  • Strong weight loss is one of the most frequently praised outcomes
  • Many users report reduced hunger and better appetite control
  • Improved blood sugar control is commonly mentioned
  • High overall satisfaction compared with similar medications
  • Many users feel the benefits outweigh the downsides

Commonly Reported Side Effects

  • Nausea is one of the most commonly reported side effects
  • Digestive discomfort is frequently mentioned, especially early on
  • Reduced appetite can feel too strong for some users
  • Dose increases are often associated with worse side effects
  • Some users find tolerability challenging despite good results

Overall Takeaway

Tirzepatide is widely viewed as one of the most effective community-reported options for weight loss and blood sugar control. Users frequently describe major reductions in appetite and meaningful changes in body weight. The main tradeoff is tolerability, with nausea and digestive side effects appearing often, especially when starting or increasing the dose. Even so, overall sentiment remains strongly positive because many users feel the results justify the downsides.

Effectiveness

Users report improvement

81%

Side Effects

Reported side effects

26%

Would Recommend

To others with same condition

77%

Avg. Duration

Average reported usage duration

N/A

Side Effects Frequency
Percentage of users reporting each side effect
Sentiment Analysis
User sentiment from reviews and feedback
Positive
71%
Neutral / Mixed
11%
Negative
18%

IM

Negative
8/11/2025
Of course. And i am finding out that if i cheat at all it must be stopping me from losing weight I thought it night fall in my off anyway but it has not.For the first few weeks it curbed my appetite but that stopped. And i still vomit once a week. Have no choice but to up my dose but i am scared i will get more sick. Same thing happened with Ozempic but i had to stop because i was sick all the time. Talk to Dr this week. I really don’t want to up dose but this is not working, it works enough to make me sick but that is all. So disappointed. Last hope

RA

Positive
10/21/2025
Using it since June. Not really having any side effects (*maybe* some acid reflux?) but it’s not anything at all that impacts my quality of life or would make we want to stop taking it. My appetite suppression is great and I’m losing weight exactly as I should be. My only regret is not starting sooner!

MI

Negative
1/1/2026
I know this is an old post but just came to say I’m on day 3 after the shot and this is miserable lol. No energy, nausea, loose stools, shakiness, body aches. I hope it’s worth it though

VV

Negative
11/18/2025
my experience with tirzepatide on 11/13, i took a 2.5 mg injection of tirzepatide. i had done some research beforehand, but i wish i had researched it more thoroughly. i knew nausea and vomiting were common side effects, and i assumed i could handle it since I had dealt with severe nausea during pregnancy. i was wrong :( within just a few hours of the injection, i began experiencing intense body aches, as if I had been hit by something. i vomited the small amount of food i had eaten that day, which was only a bowl of oatmeal. From 11/13 to now (11/18), I have been unable to keep down anything, not liquids, not light foods, nothing. yesterday, 11/17, i finally decided to go to the ER. i explained everything to them, and they immediately performed extensive testing: three blood samples, a CT scan, an EKG, an X-ray, and...

IM

Positive
12/19/2024
I had minor nausea (mainly from empty stomach) and fatigue on the first few days after shot. Now, 14 shots in, those side effects are gone and now working to treat a bit of constipation. Water, water, water. Drink the water!

OB

Positive
3/28/2025
I am on week 3 of Tirzepatide, this coming Sunday will be my 4th shot. Week 1, nothing. Week 2 I started to notice that my hunger and cravings were reduced and when I would eat, my portions were smaller. After starting Week 3 this past Sunday, I have noticed more that I can go a long time without even thinking about food. It was recommended to me that if you are cutting out Soda/tea/coffee that you would get headaches. To help combat that, you need to either drink some salt water or add sodium somewhere. I started adding the Liquid IV packets to my bottles of water everyday and that has been awesome! For fatigue- Are you also taking B-12 shots? I added those to my weekly injections as well and it helps for sure. Lastly, starting this week (3), I began to notice bowel issues when I eat...

US

Negative
1/9/2026
3rd day after first injection and I haven't stopped having nausea. No vomiting. But the nausea, fatigue and muscle pain has been nearly been impossible to work with. Im not sure if I can go the distance if this keeps up. Its almost overwhelming. Hopefully it calms down as the dose dissipates but im not excited about next week's shots.

ED

Mixed
1/22/2025
My first week in Dec was good I suffered from chronic hunger I'm a gastric bypass person with more weight to lose. I'm not diabetic. I had the first bottle from (Utah) Compound pharmacy mailed to me did great little to no side effects. The hunger went away completely. First month TZ 2.5 from a compound pharmacy in pharmacy in my state instant injection site rashes very itch and blotchy. Found they use B6 in their mix. My MD said I can stay on 2.5 or move to 5 so I tried 5 and again bad injection site rashes needing treatment. Went back to 2.5 still same rashes and worse nausea and cramping. My own experiment I'm going back to the original compound pharmacy that only uses TZ with no other ingredients. It's odd because B6, B12 and glycerin are supposed to be useful in the TZ.

MR

Positive
3/24/2025
I haven’t had any serious side effects. Some GERD with some god awful taste and waves of queasiness mostly in the day after I do the shot. That’s it so far and 5 weeks. I’m moving up to 5mg today so we will see.

HA

Positive
12/20/2024
Fatigue and some nausea - this is pretty common. Some places even mix their sema or tirz with B12 to help offset this very common side effect. Eat high protein, simple foods if you can. Avoid greasy food. Drink lots of water as others have said. I didn't notice much in terms of skin, but the fatigue was noticeable for several weeks to me.
Frequently Asked Questions about Tirzepatide (Mounjaro)

Related articles

Other Peptides