AICAR (AICAR (AMPK Activator / Exercise Mimetic))
A nucleotide analog researched as an "exercise mimetic" that activates AMPK, the cellular energy sensor, to boost endurance and fat oxidation without exercise. Banned in sport, it is included for educational reference on its metabolic mechanism.
How it works
AICAR is converted intracellularly to ZMP, which mimics AMP and directly activates AMP-activated protein kinase (AMPK). AMPK activation shifts metabolism toward fat burning, mitochondrial biogenesis, and glucose uptake, mimicking effects of endurance exercise.
Key facts
- Molecular weight: 258.23 Da
- Half-life: Short
- Bioavailability: Injection (research); poor oral
- Storage: Lyophilized/powder: cool, dry, protected from light.
Dosing overview
- Typical dose: Not established for humans
- Frequency: Research only
- Duration: Research only
- Route: Injection (research)
Protocol notes
- No validated human performance dosing exists; use is banned in sport and unapproved.
- Animal studies used weight-based injectable dosing to activate AMPK.
- Included for educational completeness on AMPK/exercise-mimetic biology.
Reported benefits
- AMPK activation (exercise-mimetic)
- Increased fat oxidation
- Mitochondrial biogenesis
- Improved endurance (animal models)
- Enhanced glucose uptake
Possible side effects
- Unknown long-term human safety
- Banned in sport
- Possible metabolic/heart-rate effects
- No approved human use
Research
- AICAR as an exercise mimetic (2008): AICAR activated AMPK and increased running endurance in sedentary mice, coining the "exercise in a pill" concept.
Community reviews of AICAR
- quiet_gains rated it 5/5 - Worth adding to the protocol: AICAR has been a worthwhile addition. I am data-driven and tracked relevant markers before, during, and after. The improvement is measurable and correlates with the intervention timeline. What sets this apart from some compounds I have tried is the consistency. Benefits did not fluctuate wildly or disappear. They built up and maintained. That gives me confidence in the mechanism. Tolerance has been excellent. Nothing in my bloodwork or subjective experience raised any flags. This is the kind of compound that does its job quietly without causing problems. Exactly what you want.
- loading_phase_lucy rated it 4/5 - Solid compound with real results: Been using AICAR for about 2 months and the results are clear. Not overnight dramatic, but a steady, consistent improvement that became undeniable by the end of the first month. The mechanism makes sense based on what I have read in the literature, and my subjective experience matches the expected timeline. Benefits built gradually and plateaued at a good level. Side effects were minimal to none at the dose I used. Followed proper protocols for sourcing, storage, and administration. Would recommend to others who have done their research and have realistic expectations.
- peak_levels_paula rated it 5/5 - Noticed clear benefits within weeks: Added AICAR to my protocol about 1 month ago and it has earned its place. The benefits became noticeable around week 2-3 and have been consistent since. What I appreciate about this compound is the predictability. It does what the research suggests it should do, at roughly the timeline you would expect. No surprises, no dramatic swings, just steady improvement. No notable side effects to report at my dose. Sourcing is always the challenge with research compounds, insist on third-party testing. Storage and reconstitution per standard protocols. Plan to continue.
- stack_logic_lisa rated it 5/5 - Consistent improvement over 3 weeks: Added AICAR to my protocol about 3 weeks ago and it has earned its place. The benefits became noticeable around week 2-3 and have been consistent since. What I appreciate about this compound is the predictability. It does what the research suggests it should do, at roughly the timeline you would expect. No surprises, no dramatic swings, just steady improvement. No notable side effects to report at my dose. Sourcing is always the challenge with research compounds, insist on third-party testing. Storage and reconstitution per standard protocols. Plan to continue.
- evidence_eli rated it 4/5 - Genuinely effective after 2 months: Been using AICAR for about 2 months and the results are clear. Not overnight dramatic, but a steady, consistent improvement that became undeniable by the end of the first month. The mechanism makes sense based on what I have read in the literature, and my subjective experience matches the expected timeline. Benefits built gradually and plateaued at a good level. Side effects were minimal to none at the dose I used. Followed proper protocols for sourcing, storage, and administration. Would recommend to others who have done their research and have realistic expectations.
Compare AICAR
Community discussions about AICAR
- Thoughts on the AICAR exercise‑mimetic page – worth the hype? - 12 comments
- Ask the community about AICAR
Research and educational reference only. Not medical advice.