GLP 1 & Weight Loss

Does Mounjaro Make You Tired

Linda Girgis | MD

Medically reviewed by Linda Girgis | MD, Girgis Family Medicine on August 20th, 2026.

Yes, Mounjaro can cause fatigue in some patients, though it's not among the most common side effects. Clinical trials show that tiredness occurs in approximately 5-10% of patients taking tirzepatide (Mounjaro's active ingredient). This fatigue typically appears during the first few weeks of treatment as your body adjusts to the medication's effects on blood sugar and appetite regulation. The tiredness often improves over time as your system adapts. If you're experiencing persistent fatigue while taking Mounjaro, we can help you understand whether this is normal or if you should discuss dosage adjustments with your healthcare provider.

Still have questions about this?

Ask your AI Doctor

Keep exploring

Related Questions

From the blog

More from Doctronic