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How Glutathione is supplied
Glutathione is supplied as a lyophilised powder or pre-filled pen solution. Reported half-life: Short in circulation. Storage: 2-8 C, protected from light. Oxidises on exposure to air.
Reference only. This page covers what the compound is, how it is presented and how it is handled. It does not give dosing protocols or administration schedules, and it is not medical advice.
Presentation
Glutathione is supplied as a lyophilised powder or pre-filled pen solution. Reported half-life: Short in circulation. Storage: 2-8 C, protected from light. Oxidises on exposure to air.
Why presentation changes the comparison
Cost per milligram is calculated from the strength printed on the listing. Where a listing states no strength the column is left blank rather than estimated. Two Glutathione listings at the same headline price are not comparable if one is a lyophilised vial and the other a pen already in solution.
| Listing | Strength | Price | Cost per mg | Stock |
|---|---|---|---|---|
| SerenQ Glutathione 1500mg Peptide Pen | 1500 mg | £95 | £0.06 per mg | out of stock |
Stocked at The PED Shop
- SerenQ Glutathione 1500mg Peptide Penout of stock£95
Availability checked 2026-09-09. The product page carries live stock.