Glutathione
Glutathione is a tripeptide antioxidant central to cellular redox biology research.
We have not published an audit on Glutathione. Everything below is reference material, not our own reading of the literature, treat it as a starting point for questions, not as a grade.
How it is thought to work
Glutathione is your cells' main cleanup molecule. It grabs onto unstable molecules called free radicals and neutralizes them before they damage cell parts. It also helps the liver tag and remove certain toxins so they can leave the body. Glutathione donates an electron from its cysteine sulfur group to neutralize reactive oxygen species. For skin specifically, glutathione blocks an enzyme called tyrosinase and nudges pigment cells toward making lighter pheomelanin instead of darker eumelanin. [Source: Peptide Dosing Protocols]
Glutathione is your body's main built-in antioxidant that neutralizes damaging free radicals, helps the liver remove toxins, and, when taken orally or by IV, may reduce skin pigmentation by blocking the enzyme that makes dark melanin, though whether standard oral doses actually raise body levels is genuinely debated.
Reported side effects
Oral glutathione is usually well tolerated with only mild digestive side effects like bloating or loose stools, but IV and injectable forms carry serious risks including abdominal cramps, liver function abnormalities, anaphylaxis, acute liver injury, and contamination-related reactions.
Who should avoid it
Pregnant or breastfeeding people, people with asthma, anyone considering IV or injectable use, people on liver-metabolized medications, and those with G6PD deficiency should consult a clinician before using glutathione.
What gets monitored
Liver and kidney labs are reasonable for anyone using higher doses or any injectable route, under clinician guidance. [Source: Peptide Dosing Protocols]
What sources report
These are figures published elsewhere, reproduced with their source. Peppersite does not recommend an amount for Glutathione or for anything else, and nothing below has been checked against the study it came from.
| Amount | Frequency | Route | Reported by |
|---|---|---|---|
| 200-600 mg per injection (IM/SC); 600-1400 mg per session (IV push); 500-1000 mg daily (oral) | 1-3 times per week (injectable); daily (oral)Key limitations / notes | subcutaneous or intranasal or oral or topical or intramuscular | Peptide Protocol WikiWhat it saysHide(secondary reference; provider confirmation required). |
| Standard: 250-1,000 mg/day · Low: 250 mg/day · High: 1,000 mg/day | daily4 weeks - 6 months · 4 weeks or longer to appear and faded after stopping. | Oral | Peptide Dosing ProtocolsWhat it saysHide(secondary reference; provider confirmation required). Standard oral dosing ranges from 250 to 1,000 mg per day. |
- 1-3 times per week (injectable); daily (oral)Key limitations / notes
- subcutaneous or intranasal or oral or topical or intramuscular
- Peptide Protocol Wiki
What it saysHide
(secondary reference; provider confirmation required).
- daily4 weeks - 6 months · 4 weeks or longer to appear and faded after stopping.
- Oral
- Peptide Dosing Protocols
What it saysHide
(secondary reference; provider confirmation required). Standard oral dosing ranges from 250 to 1,000 mg per day.
- reconstitution and supplies for injectable use, side effects, and where the evidence stops.
Common questions
What is glutathione and what does it do?
Glutathione is the most abundant antioxidant your body makes on its own, neutralizing free radicals and helping the liver remove toxins.
How much glutathione per day do studies use?
Human oral trials have most often used 250 mg to 1,000 mg per day, with skin-lightening RCTs frequently using 500 mg/day for 4 to 12 weeks.
Does oral glutathione actually work, or is it broken down in the stomach?
This is debated; some studies show it raises body stores, while others found no change.
Does liposomal glutathione work better than regular capsules?
Small studies suggest liposomal forms may raise glutathione levels more effectively than plain capsules.
Is glutathione safe?
Oral glutathione is generally well tolerated, but IV forms carry serious risks and are not FDA-approved for cosmetic use.
Does glutathione lighten skin?
Glutathione can produce a modest drop in melanin index, but the effects are temporary and reverse after stopping.
Where do clinics inject glutathione, and can I do it myself?
Glutathione for skin lightening is given by clinics intravenously; self-injection is strongly discouraged.
Does Tylenol (acetaminophen) deplete glutathione?
Yes, acetaminophen processing uses up glutathione, and an overdose can dangerously deplete it.
Sources
The reference sections above are imported from our compound knowledge base, which classes the evidence for Glutathione as emerging. That classification is the knowledge base’s, not ours, our own grade appears only where an audit is linked above. Research use only; nothing here is medical advice or a protocol.
Sermorelin is a synthetic 29-amino-acid analog of growth-hormone-releasing hormone (GHRH) studied in growth-hormone axis research.
Blend of Tesamorelin (GHRH analog) and Ipamorelin (GHRP), studied for GH-axis support, visceral fat, and recovery.
Thymosin alpha-1 is a 28-amino-acid synthetic peptide identical to the endogenous thymic peptide, studied in immune-modulation research models.
LL-37 is the only known human cathelicidin-derived peptide (37 amino acids), studied in antimicrobial and innate-immunity research models.
5-Amino-1MQ is a small molecule studied for its potential to help the body shrink fat cells and raise NAD+ levels without cutting appetite.
BPC-157 is a synthetic pentadecapeptide derived from a protective protein found in gastric juice. Studied in tissue-repair and regeneration research models.