GHRP-2 vs TB-500

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

GHRP-2

Growth Hormone Releasing Peptide 2 (GHRP-2) is considered one of the most potent GHRPs available. It provides strong GH release with moderate hunger increase compared to GHRP-6.

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TB-500

Thymosin Beta-4 (TB-500) is a naturally occurring peptide present in almost all human and animal cells. It plays a crucial role in tissue repair and regeneration.

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Side-by-Side Comparison

Aspect	GHRP-2	TB-500
Dose Range	100 mcg–300 mcg	2 mg–2.5 mg
Frequency	3x daily	Less than daily
Cycle Length	8–12 weeks	4–8 weeks
Route	subcutaneous	subcutaneous
Mechanism	Binds to the ghrelin receptor (GHS-R) to stimulate GH release from the pituitary. Also has some direct effects on the hypothalamus. Causes less appetite increase than GHRP-6.	TB-500 promotes cell migration and differentiation, regulates actin (a cell-building protein), and reduces inflammation. It supports the formation of new blood vessels and wound healing.
Typical Dosage	Typical dosing: 100-300mcg administered 2-3 times daily. Often stacked with GHRH peptides for enhanced GH release.	Research protocols typically use 2-2.5mg twice weekly during the loading phase, followed by maintenance dosing of 2mg every 2 weeks.
Administration	Subcutaneous injection on an empty stomach. Can be used at bedtime to enhance natural GH pulse during sleep.	Administered via subcutaneous or intramuscular injection. Some protocols suggest injection near injury sites.
Side Effects	Moderate hunger increase, water retention, potential prolactin and cortisol elevation (less than GHRP-6), tingling sensations.	May cause temporary fatigue, headache, or localized irritation at injection sites.
Best For	Muscle Growth Fat Loss Sleep Quality	Muscle Growth Recovery & Healing