Feeling tired all the time?

Fatigue has many causes and most of them are not peptides. The Peptide Checkup maps your answers against the two pens in the range researched for energy — NAD+ and MOTS-C — and says which, if either, it can stand behind.

Start the 7-minute Checkup See the two pens

01 — Where the Checkup usually lands

2 pens are researched for general wellbeing.

NAD+ is a coenzyme, not a peptide, and the controlled human data for injected NAD+ is thin; MOTS-C has been studied almost entirely in animal and cell models. The Checkup shows both grades before it lands anywhere. Your answers decide — including whether to buy at all.

02 — What the Checkup checks

Four things it checks for general wellbeing.

7 minutes of structured questions — categories, not essays — run through a deterministic rules engine against the evidence and regulatory database, then scored against the range.

01Whether NAD+ or MOTS-C has human evidence for energy, recovery or day-to-day wellbeing — and how thin that evidence is
02Conditions and medicines in your history that change the picture, including thyroid, sleep and mental-health factors
03Whether you compete in tested sport — MOTS-C is named on the WADA Prohibited List
04The common causes of fatigue worth ruling out with a clinician before you spend anything

Research-use pens

Sold for research use only. Not a medicine and not authorised for human consumption. Purchasers must be 18+ and confirm intended use at checkout.

Peptide Checkup

The Peptide Checkup provides educational information and a structured summary of published research and regulatory status. It is not medical advice, does not diagnose or treat any condition, and does not replace a consultation with a qualified healthcare professional.

General wellbeing

Take the 7-minute Checkup for general wellbeing.

Start the Checkup How it works

Not medical advice · Research-use labelling applies · 18+ only · It can say no

≈7 min

Start the Checkup