Carl read the papersWhat it actually is
AICAR activates AMPK, the cellular “low-energy” switch that, when flipped, tells cells to burn fuel, make more mitochondria and boost endurance — much of what exercise does.
That earned it the nickname “exercise mimetic.” It’s famous in research (and infamous in anti-doping) for boosting endurance in animals without training.
How it’s thought to work
- AMPK activation — flips the master metabolic switch toward energy production.
- Fat oxidation — shifts cells toward burning fat for fuel.
- Glucose uptake — improves how cells take up and use glucose.
- Endurance adaptations — mimics some training effects in models.
What the research says
Strong animal endurance/metabolism data; human evidence is limited and it’s banned in sport (WADA). Also studied in cardiovascular and metabolic contexts.
- Endurance and exercise-mimetic research.
- Fat oxidation and glucose uptake.
- Metabolic and cardiovascular studies.
Watch: AICAR explained
Video by Leo and Longevity on YouTube. Not affiliated with Peptide Carl and not an endorsement — included because a second explanation of the same mechanism is often what makes it click.
Reported protocols
These are the doses the peptide community actually reports running (Reddit & forums), alongside published research — logged for education, not as a recommendation to use.
| Parameter | Commonly reported range |
|---|---|
| Community view | No usable consensus — an “effective” dose (~grams/day) is cost-prohibitive |
| Reality of vials | 50 mg vials only allow token 10–50 mg/day that the community says does nothing |
| Route | SubQ / IV (rarely) |
| Cycle | ~4 weeks in theory; almost nobody runs it |
| Community tip | Widely called impractical — “the math doesn’t work” at sold vial sizes |
Common use cases
| Goal | Community protocol notes |
|---|---|
| (Theory) endurance | AMPK activation, exercise-mimetic |
| (Reality) | doses required are cost-prohibitive |
| (Verdict) | community calls it impractical |
Mixing it (reconstitution)
Freeze-dried peptides must be reconstituted with bacteriostatic water before they can be measured. Carl’s calculator turns “mg in the vial + ml of water + target dose” into “units on the syringe” — and tells you how long the vial lasts.
→ Open the Reconstitution Calculator
Injection & handling
SubQ/IV in the rare cases it’s used — but the community view is it’s impractical: the ‘effective’ dose is grams/day (cost-prohibitive), and the 10–50 mg that 50 mg vials allow does little. Not a practical protocol.
Stacks it appears in
- Mitochondrial Tune-Up — AICAR (sport mode) alongside NAD+ (fuel) and MOTS-c (performance chip).
Sources
- Narkar VA et al. AMPK and PPARdelta agonists are exercise mimetics, Cell 2008 (PMID 18674809)
- Winder WW et al. AMPK activation increases mitochondrial enzymes in skeletal muscle, J Appl Physiol 2000 (PMID 10846039)
- Boon H et al. IV AICAR in type 2 diabetic patients, Diabetologia 2008 (PMID 18709353)
- RED-CABG, Newman MF et al. Acadesine (AICAR) in bypass surgery, JAMA 2012 (PMID 22782417)
- ClinicalTrials.gov NCT00872001: RED-CABG (acadesine), terminated
- Višnjić D et al. AICAr, a widely used AMPK activator with AMPK-independent effects: systematic review, Cells 2021 (PMID 34064363)
- WADA 2026 Prohibited List (S4.4.1 AMPK activators: AICAR, MOTS-c)
