AICAR
Also known as · acadesine · AICAr · 5-aminoimidazole-4-carboxamide riboside · AMPK activator
- EvidenceLimited
- CategoryMetabolic
- RouteIV
- Half-lifen.a.
01 / Dosing schedule
Cited dosing
AICAR is not a peptide and has no approved human product; the human dosing that exists is acute intravenous infusion in small metabolic pharmacology studies, not chronic dosing. Verified figures are 0.75 mg/kg/min IV and, in an earlier cited study, 10 mg/kg/h IV for 3 hours.
AICAR intravenous infusion — human metabolic studies
| Phase | Dose & frequency |
|---|---|
| Infusion rate (Boon et al.) | 0.75 mg/kg/min continuous IV, stated in the Discussion as equivalent to 45 mg/kg/h |
| Control infusion | 0.9% NaCl IV |
| Earlier human study cited (Cuthbertson et al.) | 10 mg/kg/h AICAR infusion for 3 h in young healthy males |
| Design | two experimental tests per volunteer (AICAR vs saline), randomised order, at least 2 weeks apart |
| Repeat / chronic dosing | n.a. — no chronic human dosing regimen was confirmed from a primary source |
| Oral or subcutaneous dosing | n.a. — no oral or subQ human dose was confirmed from a primary source |
Source indication · Acute metabolic pharmacology — hepatic glucose output and lipolysis during IV AICAR infusion in type 2 diabetes / healthy volunteers
- Injection frequency
- Acute, single-session infusion in the published human studies. There is no published repeated-dose or multi-week human AICAR schedule.
- Injection sites
- Not an injection protocol: AICAR was given as a continuous intravenous infusion, with blood sampled by venepuncture from the arm opposite the infusion. No subcutaneous site exists in the human record.
02 / Reconstitution
Reconstitution reference
The human studies infused AICAR intravenously in a clinical research setting alongside 0.9% NaCl; no participant-level reconstitution procedure is published, and no vial strength is given.
03 / Overview
Protocol overview
AICAR (acadesine) is a nucleoside AMP mimetic that is phosphorylated intracellularly to ZMP and activates AMPK. It is a small molecule, not a peptide, and it has never been approved for a metabolic or performance indication.
The clearest human dosing data comes from a randomised crossover metabolic study in which each volunteer completed one test with continuous IV AICAR at 0.75 mg/kg/min and one with 0.9% NaCl, at least two weeks apart, with stable-isotope glucose and palmitate tracers to quantify hepatic glucose output and lipolysis.
That paper explicitly restates the dose as 45 mg/kg/h and cites an earlier human study by Cuthbertson and colleagues that infused AICAR at 10 mg/kg/h for 3 hours in young healthy males, giving a documented human range of roughly 10-45 mg/kg/h by IV infusion. A pharmacology review of AICAR tabulates the wider human trial record, which is dominated by continuous IV acadesine in cardiac surgery (for example 0.1 mg/kg/min for 7 h) and by oncology dosing (single IV doses of 50-315 mg/kg in relapsed CLL), plus 10, 25, 50 and 100 mg/kg oral and IV doses in 1991 healthy-volunteer work. None of that is a chronic outpatient regimen.
AICAR is also a WADA-prohibited substance. This record is flagged 'limited' because the human evidence is acute infusion pharmacology and surgical/oncology dosing, not therapeutic trials of the use it is marketed for. There is no published chronic subcutaneous or oral regimen and no human half-life in the fetched sources.
04 / References
References
- Boon H et al. Intravenous AICAR administration reduces hepatic glucose output and inhibits whole body lipolysis in type 2 diabetic patients. Diabetologia 2008 ↗
- Visnjic D et al. AICAr, a Widely Used AMPK Activator with Important Pharmacological Actions — review tabulating human acadesine/AICAR trial doses (PMC8147799) ↗