TB-500 side effects
Across 874 first-hand reports, people mentioned a side effect 29 times (about 3 per 100 reports). The most common: anxiety, fatigue, dizziness. User reports show what people notice — they can't tell you whether TB-500 is safe for you.
High-risk compound. Not an approved supplement; serious and sometimes irreversible risks, banned in sport, may be restricted where you live.
Reported side effects
anxiety8
fatigue5
dizziness4
allergic reaction4
flushing3
headache3
nausea1
drowsiness1
What got worse for some people
In their own words
“First I took 1mg on Monday because of all the fear mongering posts. I felt zero sides. Thursday came around and I took 2mg. Slight fatigue but after a nap I was good to go.”
“after using thymosin beta from October-December last year I would say that it is about 70% better.”
“I recently had blood work done after a 6 week cycle to address bad tendinitis, and it would amazingly well, but significantly increased my RBC and HCT levels.”
“TB-500 seems to be great. After about 11 days of my weird/inconsistent dosing protocol, I can actually feel a positive effect in my upper back. Traps are way less tight/spasmed and my thoracic feels more mobile for the first time in about 5 months.”
Is TB-500 safe? What the research covers
CResearch: Limited0 meta-analyses · 3 randomized trials on PubMed
None of the top reviews we found focus on safety. All research on TB-500.