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HGH Fragment 176-191 vs Selank

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

HGH Fragment 176-191

HGH Fragment 176-191 is the fat-reducing portion of the growth hormone molecule. Unlike AOD-9604 (which has an additional tyrosine), this is the exact fragment of HGH responsible for lipolytic effects.

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Selank

Selank is a synthetic peptide derived from the naturally occurring immunomodulatory peptide tuftsin. Developed in Russia for anxiety and cognitive enhancement.

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Side-by-Side Comparison

AspectHGH Fragment 176-191Selank
MechanismMimics the lipolytic region of growth hormone, stimulating fat breakdown and inhibiting lipogenesis without affecting blood sugar or promoting growth. Works independently of GH receptors.Modulates the expression of brain-derived neurotrophic factor (BDNF) and affects serotonin and norepinephrine systems. Has immunomodulatory and anxiolytic properties.
Typical DosageTypical dosing: 250-500mcg daily, often split into 2-3 doses. Usually administered on empty stomach, often with fasted cardio.Intranasal administration: 250-500mcg 2-3 times daily. Subcutaneous: 250-500mcg daily.
AdministrationSubcutaneous injection. Best results when used fasted and combined with exercise. Avoid eating for 30 minutes post-injection.Most commonly administered intranasally for cognitive effects. Can also be injected subcutaneously.
Side EffectsGenerally well-tolerated. May cause injection site irritation, temporary lethargy, or headache. Does not affect blood glucose significantly.Generally well-tolerated. Some users report mild fatigue or nasal irritation with intranasal use.
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Key Differences

Unique to HGH Fragment 176-191:

Unique to Selank:

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