Is Forskolin legal in the United Kingdom?

No lifespan benefit in either sex in the 2021 mouse cohort where epicatechin, halofuginone and mitoglitazone all extended male lifespan. The human evidence is two 12-week trials totalling 53 people, one showing fat loss in men and one showing none in women.

Forskolin is a diterpene from the root of Coleus forskohlii, and it is a genuinely important laboratory reagent: it activates adenylyl cyclase directly, bypassing G protein-coupled receptors, which makes it the standard tool for raising cyclic AMP in a cell. That pharmacological reliability is a large part of why it was worth testing and a large part of why it is oversold.

Mechanism: A labdane diterpene that binds and activates adenylyl cyclase directly at the catalytic subunit, raising intracellular cyclic AMP without needing a receptor. Elevated cAMP activates protein kinase A, which phosphorylates hormone-sensitive lipase and perilipin and therefore promotes lipolysis in adipocytes, which is the entire basis of the fat-loss claim.

Regulatory history: Sold as a dietary supplement, usually as a standardised Coleus forskohlii root extract. Not an approved drug and not approved to prevent or treat anything.

Licenses medicines for the UK market. A compound without a marketing authorisation is an unlicensed medicine, which can only lawfully be supplied for human use through a prescriber under the specials scheme, not sold as a research product.

The classification above is the The Longevity Archive reading of Medicines and Healthcare products Regulatory Agency listings for Forskolin at the reviewed date, not a legal opinion. Rules change, and importing, prescribing and possessing a compound can each be treated differently. Check the regulator directly before acting on anything here.