Cognitive
Epithalon
Epitalon
One of the shakiest entries on this list. The pitch — slowing ageing by working on the very ends of your chromosomes — comes from Russian research decades old. Testing has stayed in lab cells and animals ever since, so whether it does anything for a real person is genuinely unknown.
The weakest evidence base in this list — included because it's genuinely on UK private-clinic menus.
How well studied
Tier Guide: A = Well studied, B = Some good studies, C = Early evidence & D = Barely studied
Little to no real testing in humans at all. Mostly theory, lab results, or anecdote.
Heightened caution: this compound carries unresolved regulatory, safety or supply-chain concerns in the UK. Nothing here is a recommendation to use it.
How it works
Two claims, both from lab and animal studies only: it switches on an enzyme that protects the ends of your chromosomes, and it helps reset your body's internal sleep clock.
Proposed to activate telomerase and support circadian/melatonin regulation — shown in human cell cultures and rodents only.
Reported benefits
- Proposed telomerase activation (shown in cell cultures, not living humans)
- Proposed circadian/sleep support
Who it's typically used for
Timeline to results
Dosage
No established human dose — no human trials have tested the claimed effect at any dose.
Side effects
- Limited human safety dataessentially unknown
Getting it in the UK
Still legal for a doctor to prescribe, but it hasn't been officially approved for this specific use. Uncommon, and comes down to a specialist's own judgement.
MHRA: the UK government body that checks a medicine is safe and actually works before doctors are allowed to prescribe it.
Content freshness
- Last reviewed
- 11 Aug 2026
- Regulatory status last checked
- 11 Aug 2026