Protirelin (TRH)
otherProtirelin (TRH) is a research-use-only peptide. PeptideSource compares suppliers on purity, COAs, and price-per-mg.
Also known as: TRH, Thyrotropin-Releasing Hormone, TRH Thyrotropin, Protirelin
Protirelin (TRH), also known as Thyrotropin-Releasing Hormone, is a tripeptide hormone produced in the hypothalamus. It functions by stimulating the pituitary gland to release thyroid-stimulating hormone (TSH), which in turn regulates thyroid function. Protirelin (TRH) first drew attention for its role in the hypothalamic-pituitary-thyroid axis, a key area of study in endocrinology. It acts at the cellular level to initiate a cascade of hormonal events critical for metabolism regulation. Beyond that, work continues on understanding its broader implications in neuroendocrine pathways. Today, it is primarily studied for its effects on:
- Investigating its effects on mood disorders
- Exploring its role in neuroprotection
- Understanding its impact on metabolism
PeptideSource editorial · Updated Jul 18, 2026
For research use only. PeptideSource does not sell peptides directly. Compare third-party supplier listings at your own discretion.
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Size | ||
|---|---|---|
| Shop now | Shop | Shop |
| Product | TRH Thyrotropin Protirelin | TRH Thyrotropin Protirelin |
| Size | 25 mg | |
| Price | $170.00 | $93.00 |
| Price/mg | $3.40/mg | $3.72/mg |
| Price change | 0% (10d) | 0% (16d) |
| Stock | In stock | In stock |
| Shipping | Same/next-day dispatch | Same-day dispatch |
| Reviews | 1.0(4) | 4.9(15) |
| Purity | 99% | 99% |
| COA | — | — |
| Bulk discount | — | — |
