Ingredient or product comparison
Glow Stack Glutathione: Delivery and Formulation Comparison
Standard Oral GSH (capsule/powder) 10–20% 1,000–3,000mg 60–90 minutes $0.30–$0.60 Poor choice for skin radiance. Most of the dose is degraded before absorption; plasma levels spike briefly and return to baseline within 2 hours Liposomal Glutathione 30–40% 500–
This source-based comparison does not add ratings or recommend a winner.
- Standard Oral GSH (capsule/powder)
- 10–20%
- 1,000–3,000mg
- 60–90 minutes
- $0.30–$0.60
- Poor choice for skin radiance. Most of the dose is degraded before absorption; plasma levels spike briefly and return to baseline within 2 hours
- Liposomal Glutathione
- 30–40%
- 500–1,000mg
- 4–6 hours
- $1.20–$2.00
- Gold standard for oral delivery. Phospholipid encapsulation protects the molecule through digestion and allows sustained plasma elevation
- S-Acetyl-Glutathione (SAG)
- 35–45%
- 250–500mg
- 3–5 hours
- $1.50–$2.50
- Effective alternative to liposomal. Acetyl group prevents gut degradation; intracellular release is reliable but costs more per milligram
- Sublingual Reduced GSH
- 15–25%
- 90–120 minutes
- $0.80–$1.20
- Moderate improvement over oral but not as consistent as liposomal. Depends heavily on buccal membrane contact time
- IV Glutathione (clinical setting)
- ~100%
- 600–1,200mg per session
- 6–8 hours
- $75–$150 per session
- Maximum bioavailability but requires clinical administration. Used for acute oxidative stress or medical protocols, impractical for daily skin radiance
- Topical Glutathione (cream/serum)
- <5% dermal penetration
- N/A (applied topically)
- N/A
- $0.50–$1.00 per application
- Minimal systemic impact. Glutathione molecule is too large and hydrophilic to cross the stratum corneum; works only on surface oxidation