Skip to main content

Leuphasyl vs AOD-9604

A detailed comparison to help you understand the differences and choose the right peptide for your research goals.

Leuphasyl

Leuphasyl (Pentapeptide-18) is a cosmetic peptide that reduces muscle tension through a mechanism similar to enkephalins. Often combined with Syn-Ake for enhanced anti-wrinkle effects.

Full details →

AOD-9604

AOD-9604 is a modified fragment of human growth hormone (HGH fragment 176-191). It was developed to have the fat-reducing effects of growth hormone without the adverse effects on blood sugar or growth.

Full details →

Side-by-Side Comparison

AspectLeuphasylAOD-9604
MechanismMimics enkephalin and binds to enkephalin receptors on muscle cells, reducing acetylcholine release and thereby decreasing muscle contraction intensity.Stimulates lipolysis (fat breakdown) and inhibits lipogenesis (fat accumulation) without affecting blood sugar or growth. Works specifically on adipose tissue through a mechanism independent of GH receptors.
Typical DosageTopical: 3-8% concentration in serums. Often used in combination products with other muscle-relaxing peptides.Research dosing typically ranges from 250-500mcg daily, often split into morning and afternoon doses. Some protocols use higher doses up to 1mg.
AdministrationTopical application to expression lines. Best results with consistent twice-daily use over 8+ weeks.Subcutaneous injection, typically in the abdominal area. Best administered on an empty stomach. Can be combined with exercise for enhanced effects.
Side EffectsVery well-tolerated topically. No significant adverse effects reported at cosmetic concentrations.Generally well-tolerated. May cause headaches, injection site reactions, or temporary lethargy. Does not affect blood glucose like full GH.
Best For

Key Differences

Unique to Leuphasyl:

Unique to AOD-9604:

Ready to Learn More?