Glutathione Dosage, Timing and Safety: Complete UK Guide

Key Takeaways

Q: What is the right glutathione dosage for adults?

A: Most clinical research uses 250-1000mg reduced glutathione daily. Futuro Labs at 500mg per serving sits at the centre of this range — £22.99 for 30-day supply.

Q: Is 500mg glutathione enough?

A: Yes for most use cases. 500mg reduced glutathione daily matches the most-cited clinical research dose tier. Higher doses (1000mg+) are used in some skin-focused protocols but with diminishing returns.

Glutathione Dosage, Timing and Safety

Glutathione does not have a UK or EFSA-established daily reference value. Clinical research dose ranges sit between 250mg and 1000mg reduced glutathione daily, with 500mg being the most-used tier across general antioxidant, liver support, and skin-related research.

Daily dose: 500mg reduced glutathione is the most-researched general dose. Skin-focused protocols sometimes use 1000mg but evidence beyond 500mg is mixed. Futuro Labs at 500mg per capsule provides the established research dose in a single daily serving.

Is 500mg glutathione enough? Yes for most users. The dose matches research protocols. Pairing with Vitamin C provides additional antioxidant pathway support without raising glutathione dose.

How much glutathione per day for skin? Skin clarity protocols in research range from 250mg to 1000mg daily. 500mg is the most-cited middle-ground tier. Effects build over 8-12 weeks of consistent intake.

How long for glutathione to lighten skin? Variable by individual. Skin-related research shows changes over 8-12 weeks. Sun exposure undoes any pigmentation work — SPF 30+ daily is non-negotiable for skin clarity protocols. Effects are typically subtle (uniformity and clarity) rather than dramatic colour change.

When to take glutathione capsules: with food helps absorption and reduces stomach sensitivity. Morning is most common. Some users split dose morning and afternoon for steady-state coverage.

Does oral glutathione actually work? Research is mixed but trending positive. Earlier studies suggested poor oral bioavailability; more recent research has shown measurable effects on glutathione status in tissues. Reduced glutathione capsules at 500mg daily produce measurable antioxidant biomarker changes in research.

Safety: generally well-tolerated. Possible mild GI upset in sensitive users. Not recommended during pregnancy or breastfeeding without GP guidance. People on chemotherapy should consult their oncologist before supplementing antioxidants.

Futuro Labs Glutathione (500mg, 30-day supply at £22.99) provides the research-grade daily dose at £0.77/day. For UK ranking see Best Glutathione UK 2026. For natural glutathione boost see How to Boost Glutathione Naturally.

Futuro Labs Glutathione is available on Amazon UK: View on Amazon