CJC-1295 vs TB-500

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

CJC-1295

CJC-1295 is a synthetic analog of growth hormone-releasing hormone (GHRH) that stimulates the pituitary gland to produce more growth hormone.

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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	CJC-1295	TB-500
Dose Range	1 mg–2 mg	2 mg–2.5 mg
Frequency	Less than daily	Less than daily
Cycle Length	8–12 weeks	4–8 weeks
Route	subcutaneous	subcutaneous
Mechanism	CJC-1295 binds to GHRH receptors in the pituitary, triggering increased production and release of growth hormone. The DAC (Drug Affinity Complex) version extends half-life significantly.	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	CJC-1295 DAC: 1-2mg weekly. CJC-1295 no DAC (Mod GRF 1-29): 100-300mcg 2-3 times daily.	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, often combined with a GHRP like Ipamorelin for synergistic effects. Best administered before sleep or fasted.	Administered via subcutaneous or intramuscular injection. Some protocols suggest injection near injury sites.
Side Effects	Water retention, tingling in extremities, potential increase in cortisol and prolactin levels.	May cause temporary fatigue, headache, or localized irritation at injection sites.
Best For	Muscle Growth Fat Loss Sleep Quality	Muscle Growth Recovery & Healing