Product Overview
Glutathione is a tripeptide built from glutamic acid, cysteine and glycine, and it is the most abundant antioxidant inside human cells. Generic Peptides offers it as freeze-dried powder in 200 mg and 500 mg vials. It differs from almost everything else on this shelf in one respect: it is not a foreign molecule at all but a substance the body already makes on its own, in large quantities.
Its work inside the cell is enzymatic. Glutathione is the cofactor that glutathione peroxidase uses to neutralise hydrogen peroxide and lipid peroxides, and the substrate that glutathione-S-transferase uses to conjugate drugs, toxins and metabolic waste so they can be excreted. That second role is why the liver keeps appearing in any honest discussion of this vial: conjugation is one of the main ways the body disposes of xenobiotics.
The medical picture is uneven. Intravenous glutathione is used in a number of countries as part of supportive antioxidant therapy, and the fills here, 200 mg and 500 mg, sit in the same range as clinical presentation vials of 200-600 mg. What it does not have is a cosmetic approval, and the regulator in the Philippines has stated publicly that no clinical studies support injectable glutathione for skin lightening.
Dosage Protocol
Nothing sold here comes with an approved dose for buyers, and the clinical material describes intravenous infusion rather than the subcutaneous route most research peptides use. The table gives the dilution arithmetic and the reference points from medical practice.
| Clinical reference | Vials of 200-600 mg given by intravenous infusion, with the amount varying between protocols |
| Route in medicine | Intravenous infusion; oral forms are studied separately and behave very differently |
| 200 mg plus 2 ml | Reaches 100 mg/ml, where a 10 unit pull holds 10 mg |
| 500 mg plus 5 ml | Also 100 mg/ml and the same 10 mg pull, so the two fills can be prepared identically |
| 500 mg plus 10 ml | Halves the strength to 50 mg/ml, where 10 units carries 5 mg |
| 200 mg plus 4 ml | Also 50 mg/ml, matching the diluted 500 mg vial |
| Female | No separate protocol appears in the sources checked; a female schedule is not described |
The powder is dissolved with water for injection or bacteriostatic water, stored cold and away from light, and never frozen; the dry cake holds far longer than the liquid. One structural point belongs here rather than at the end. Because the body clears exogenous glutathione within minutes, an infusion is a short sharp exposure, and any protocol built on it has to be understood in those terms.
Suggested Protocols
No controlled study has combined this vial with anything else on the shelf, so the groupings below are shelf maps for a reader comparing options. They separate the redox pairing, the repair line and the immune peptides that are bought alongside it.
What to Expect
- A very short exposure. Exogenous glutathione leaves plasma in roughly ten minutes, and infusion studies give a mean of about fourteen with a wide spread, so effects are brief by design.
- Urinary output changes first. After an infusion the amount excreted in urine rises several fold during the first ninety minutes, which is the clearest measurable event.
- Enzymatic support, not a drug effect. The substance works as cofactor for glutathione peroxidase and glutathione-S-transferase, which is a supporting role rather than a direct action.
- A liver angle with a caveat. Conjugation of xenobiotics is real, but the standard antidote in paracetamol poisoning is N-acetylcysteine, not glutathione itself.
- Oral and injected are different products. Oral bioavailability is poor because the peptide is hydrolysed in the gut, which is why oral and liposomal forms are studied as separate questions.
- No skin-lightening trial file. Published clinical trials of injectable glutathione for cosmetic lightening do not exist, and regulators have said so directly.
Side Effects and Management
This is a substance the body already handles, so the risks are mostly those of the route and the procedure rather than of the molecule. The rows below come from clinical notes and from reports around cosmetic infusion clinics.
Post-Cycle Therapy
There is nothing hormonal to recover from, so a post-cycle protocol does not apply to this line. Glutathione is not an androgen, does not aromatise and has no effect on luteinising hormone, sperm production or natural testosterone output.
The one regulatory detail that does belong beside a recovery discussion concerns athletes. Glutathione itself is absent from the prohibited list, but the infusion route is restricted: intravenous infusions and injections above 100 ml within twelve hours are prohibited under class M2, so the method, not the molecule, is what gets an athlete into trouble.
