Glutathione Dosage: How Pepti Prescribes the Injection, in Units, mL and mg

The price is all-in, covering medication, physician review, refill management and shipping, with no separate membership fee. Pepti is cash-pay and does not bill insurance. These are the typical printed directions; your own directions are the ones on your vial.

Pepti's directions are written in two forms, millilitres and units, because prescriptions are written in millilitres and insulin syringes are marked in units. On a U-100 insulin syringe, 1 unit is 0.01 mL, so 100 units is 1 mL and 41 units is 0.41 mL. A unit is a volume mark on the barrel, not a measure of how strong the medication is.

The milligram figure comes from the concentration. Pepti's glutathione is supplied at 200 mg/mL, a concentrated solution, so small volumes carry large amounts:

That arithmetic is a way to read a label, not a way to set a dose. A vial labelled 1000 mg is not a 1000 mg dose: it is twelve 82 mg doses. If your label and your syringe seem to disagree, do not dose; message your care team. How long does a peptide vial last explains every number on a vial label in more detail.

The chart below is the conversion for a 200 mg/mL vial, drawn with a U-100 insulin syringe. It is math only. It is not a menu of doses, and the only line that applies to you is the one that matches the number printed on your vial.

The rule behind every row: units divided by 100 gives millilitres, and millilitres multiplied by 200 gives milligrams, which is the same as units multiplied by 2. A chart written for a different concentration gives different milligrams for the same units, so a glutathione chart from another clinic, or for a research powder, does not transfer to this vial. That is the main reason not to dose from a chart, including this one.

Glutathione is supplied as a vial and syringe only. There is no pen cartridge, so the syringe units are always how the dose is measured.

At Pepti's typical directions, one 1000 mg vial lasts about four weeks:

Four weeks is why refills run every 28 days, one vial per fill. A small remainder stays in the vial because the last partial dose cannot be drawn accurately. If a vial runs short before the refill, message your care team rather than adjusting anything yourself. If you miss a dose, follow your directions and do not take two doses to make up for one.

Glutathione has more human trials than most compounded injectables, and the doses in them are often quoted online as if they were injection protocols. They were oral, intravenous or intranasal, and none was subcutaneous:

The honest reading is that there is no human dosing study of subcutaneous glutathione at all. Oral doses pass through the gut, where glutathione is exposed to digestive breakdown (a single oral dose did not raise plasma glutathione in a 1992 study), so oral milligrams do not translate into injected milligrams. Intravenous doses of 600 mg to 1,400 mg rose sharply in plasma and cleared within minutes to an hour in a 1991 study; a 0.41 mL subcutaneous dose is a small fraction of those amounts, one reason the intravenous findings should not be assumed to transfer. These trials also measured laboratory markers and disease scores in specific populations, not how people feel. That is why your directions come from a physician who has reviewed your intake, not from a study table. The evidence, claim by claim, is in glutathione benefits.

Your physician sets your directions after reviewing your intake. Things that can lead to different directions include:

When directions change, the new numbers are printed on the new label. Never carry a number over from a previous fill. Bloodwork is not required for any Pepti treatment. If your physician wants labs for your care, they'll ask through your account.

The full list is in glutathione side effects. Glutathione has an unusually deep tolerability record: the 2009 intravenous trial reported adverse events similar to placebo at 1,400 mg three times weekly, and the six-month oral trial reported no safety signal.

Glutathione is in 503A Category 1 on the FDA's list dated 14 May 2026, "Bulk Drug Substances Under Evaluation," and was never in Category 2. Compounded glutathione is not FDA approved, and compounded medications are not FDA approved.

Glutathione injections cannot be bought legitimately without a prescription. Sites selling vials "for research use only" are not accountable for identity, purity, sterility or concentration, so even the concentration your units chart depends on is unknown. In 2019 the FDA warned about a supplement-grade glutathione powder used to make injections that contained bacterial endotoxin. The prescription route:

1. Complete a free online intake covering your history, medications and what you want help with.
2. A physician licensed in your state reviews it, usually within 24 hours.
3. If it is appropriate, a PCAB-accredited, FDA-registered US 503A compounding pharmacy prepares it to that prescription. Lot test results are published at /quality/lab-results.
4. It ships refrigerated with your directions printed on the vial.
5. Your physician stays reachable for questions and dose changes.

Pepti prescribes glutathione in every state except Oklahoma, plus DC Step by step: how to get glutathione prescribed online. The full product reference is what is glutathione.