Testagen vs AICAR
Side-by-side comparison of key properties, dosing, and research.
- Summary
- Testagen is a tetrapeptide bioregulator (Lys-Glu-Asp-Gly) developed by Professor Vladimir Khavinson, tissue-specific for the testes. It supports Leydig cell function, normalization of testosterone biosynthesis, and spermatogenic activity. Testagen is used in men's health protocols for age-related testosterone decline, male fertility support, and testicular anti-aging.
- AICAR is a cell-permeable AMP analog that activates AMPK (AMP-activated protein kinase) — the master metabolic switch that triggers fat burning, mitochondrial biogenesis, and adaptations normally only achieved through exercise. It has been called the 'exercise in a pill' compound.
- Half-Life
- Short (minutes); sustained gene-regulatory effects
- ~2–3 hours
- Admin Route
- SubQ, Oral
- SubQ, IV
- Research
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- Typical Dose
- 10 mg per day
- 25–50 mg
- Frequency
- Daily for 10–30 days
- 3–5 times per week
- Key Benefits
- Supports endogenous testosterone synthesis via Leydig cell normalization
- Promotes spermatogenesis and sperm quality
- Anti-aging effects on testicular tissue
- May attenuate age-related testosterone decline
- Mechanistically distinct from TRT — does not suppress HPG axis
- Useful adjunct to Gonadorelin and Kisspeptin-10 in male hormonal protocols
- Supports male fertility without exogenous hormone replacement
- AMPK activation mimics aerobic exercise adaptations
- Increased fat oxidation and endurance
- Mitochondrial biogenesis (PGC-1alpha)
- Improved insulin sensitivity and glucose metabolism
- Anti-inflammatory effects
- Potential cardiac protection during ischemia
- Synergistic with actual exercise training
- Reduces hepatic glucose production
- Side Effects
- Generally well tolerated
- Mild injection site reactions
- No significant endocrine disruption reported at standard doses
- Hypoglycemia risk
- Lactic acidosis at high doses (animal data)
- Injection site irritation
- Stacks With
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