Brand · 01

FourNines

Purity Without Compromise

The name comes from a number: 99.99%. Not a marketing claim — an engineering aspiration our manufacturing process targets with every single batch.

USA ImportedcGMP CertifiedPIC/SHACCPTFA FreeEndotoxin FreeMicroplastic Free

FourNines is sourced exclusively from the United States, produced in facilities operating under cGMP, PIC/S, and HACCP certification — the same regulatory frameworks applied to pharmaceutical and food safety manufacturing at the highest international standards. In practice, we consistently achieve 99.9x% measured purity, a result that places FourNines in a tier most suppliers in the global peptide market cannot reach or even attempt.

Every batch is TFA-free, endotoxin-free, and microplastic-free. These are not standard features in the peptide industry. TFA — a residual solvent from peptide synthesis — is present in most commercially available peptides and degrades both stability and biological tolerance. Endotoxins are a known inflammatory risk in injectable products. Microplastics are only beginning to be scrutinised in the wellness space, but we scrutinise them now. Acetate and hydrochloride salt forms are used as counter-ions throughout production, ensuring chemical stability and optimal bioavailability.

This is the product for the person who has done the research. Who understands why purity documentation matters, why source country matters, why the absence of certain contaminants is not optional. FourNines is for the longevity physician, the elite biohacker, the professional athlete who treats their body with the same precision they apply to everything else in their life.

FourNines · lot verified