Understand the source comparison
Best Peptides for Men 45-55 Andropause: Mechanism Comparison
GHRP-2 Ghrelin receptor agonist. Stimulates pulsatile GH release from pituitary 100mcg doses showed 35-50% IGF-1 increase in men 40-60 (clinical trial data) 100-300mcg subcutaneous 2-3x daily, pre-meal or pre-sleep GH pulse within 30 min; IGF-1 rise over 2-4 w
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- GHRP-2
- Ghrelin receptor agonist. Stimulates pulsatile GH release from pituitary
- 100mcg doses showed 35-50% IGF-1 increase in men 40-60 (clinical trial data)
- 100-300mcg subcutaneous 2-3x daily, pre-meal or pre-sleep
- GH pulse within 30 min; IGF-1 rise over 2-4 weeks
- Best for men seeking lean mass retention and sleep improvement without exogenous GH
- MK-677 (Ibutamoren)
- Oral ghrelin mimetic. 24hr half-life allows once-daily dosing
- 72.9% IGF-1 increase in 12-month trial (men 60-81)
- 12.5-25mg oral once daily, evening preferred
- IGF-1 elevation within 1 week; body composition changes 8-12 weeks
- Most convenient GH secretagogue for long-term use; no injection requirement
- Tesamorelin
- GHRH analog. Reduces visceral fat via endogenous GH stimulation
- 15-18% visceral fat reduction over 26 weeks (NEJM-published, FDA-approved indication)
- 2mg subcutaneous daily
- Fat mobilization detectable at 12 weeks; peak effect 6 months
- Gold standard for visceral adiposity in men with waist >40 inches
- AOD-9604
- C-terminal GH fragment. Lipolytic without affecting glucose or IGF-1
- 2.6kg mean fat loss over 12 weeks without lean mass change
- 1mg subcutaneous daily or 300mcg 2x daily
- Fat loss measurable at 4-6 weeks
- Suitable for men concerned about insulin resistance or IGF-1 elevation
- MOTS-C
- Mitochondrial-encoded peptide. Activates AMPK, improves insulin sensitivity
- Prevented diet-induced obesity in animal models; human trials emerging
- 5-10mg subcutaneous or intranasal 3x weekly
- Metabolic flexibility improves within 2-3 weeks
- Best for men with documented insulin resistance or metabolic syndrome markers
- Semax
- ACTH analog. Enhances BDNF, improves neuronal glucose uptake
- Cognitive performance improvement within 10 days (Russian clinical data)
- 300mcg intranasal spray 1-2x daily
- Cognitive effects within 7-14 days
- Addresses brain fog and stress resilience often overlooked in andropause treatment