It's also best to avoid using them at the same time as strong acids (like glycolic or salicylic acid), high-strength vitamin C, or retinoids
Legal Status Buy BPC-157 TB-500 UK Not controlled substances in the UK Legal to purchase for laboratory research purposes Astra Labs fully research-use-only compliant Not approved for human consumption Not licensed medicines no MHRA authorisation For the full legal breakdown on UK peptide law in 2026, see our dedicated guide: Are Peptides Legal in the UK
This verification process confirms purity levels and identifies any contaminants before release
Chemyo SwissChems and Chemyo are both high-quality sources, each guaranteeing over 99% purity
It also ranks as the most trusted peptide company on the measure that matters most, publishing batch-level COAs rather than in-house or generic reports, so a researcher can verify purity and identity before purchase
Overall wellness Sermorelin causes the pituitary gland to produce and release growth hormone (GH)
