Tesamorelin Side Effects
Medically reviewed by Dr. Jonathan Snipes, MD
Reviewed for clinical accuracy · Last reviewed July 22, 2026 · Review policy
Quick answer
The most common Tesamorelin side effects are injection-site reactions and joint pain (arthralgia), and are usually mild and dose-related. Serious effects are less common; the full breakdown and cautions are below.
| Effect | Frequency |
|---|---|
| Injection-site reactions | Common |
| Joint pain (arthralgia) | Common |
| Swelling / fluid retention (edema) | Less common |
| Muscle aches | Less common |
| Increased blood glucoseRelevant for anyone with or at risk of diabetes | Less common |
Because tesamorelin raises growth hormone and IGF-1, its side effects resemble mild growth-hormone excess: joint pain, fluid retention, swelling, and muscle aches. It can raise blood glucose, which matters for anyone with or at risk of diabetes. As with any growth-hormone secretagogue, it is contraindicated in active malignancy and requires clinician oversight.
Frequently asked questions
What are the most common Tesamorelin side effects?+
The most common Tesamorelin side effects are injection-site reactions and joint pain (arthralgia). See the full frequency table above for less common and rare effects.
Is Tesamorelin safe?+
Tesamorelin is FDA-approved and, used under medical supervision, is generally tolerated, but it is not risk-free: it has side effects and specific contraindications. Discuss your history with a clinician.