Glutathione Dosage in 2026: How Much to Take, by Route

Most glutathione dosing falls in a familiar range: oral supplements run about 250 to 1,000 mg a day, IV drips run about 600 to 2,400 mg per session, and subcutaneous injections run about 200 to 600 mg, usually 1 to 3 times a week. The right number depends on the route, your goal, and how your clinician reads your history.

Injectable and IV glutathione bypass the gut, so they deliver more of the dose than a swallowed pill. This guide walks through the amounts by route and the timing that makes them easier to tolerate. At pru, glutathione is a prescribed, 503A-compounded at-home injection, and your exact dose lives on the pharmacy label, not on a blog.

How much glutathione you take depends mostly on the route

Glutathione (GSH) is a tripeptide, three amino acids the body uses as its main antioxidant. How much you need to take is driven less by the molecule and more by how it gets into you. Swallowed glutathione has to survive digestion, so a large share never reaches the bloodstream intact. Injected and IV glutathione skip the gut entirely, so a smaller number on the label can deliver more to your system. That is why an oral dose and an injection dose look so different on paper.

Start at the low end and build up as you tolerate it

The standard approach across every route is the same: begin at the bottom of the range and increase only if you tolerate the first doses well. This lets you find the smallest amount that does the job and keeps side effects low. A higher dose is not the goal; the lowest effective one is.

1. Begin at the low end of your route's range (for a subcutaneous shot, that is near 200 mg).
2. Hold there for the first week or two and note how you feel.
3. Increase in small steps only if your clinician's plan calls for it and you are tolerating it well.
4. Split a dose or lower it if you notice injection-site soreness or other effects.
5. Give it time. Antioxidant and skin goals unfold over weeks, not days.

Slow and steady wins here. The goal is the lowest effective dose, not the highest tolerated one.

Timing and storage are small details that make dosing work

Glutathione is generally flexible on time of day, and many people dose in the morning out of habit. Some split an oral dose across the day to smooth out absorption. The bigger practical issue is storage. Compounded glutathione is light-sensitive and needs refrigeration, and it should not be mixed in the same line or syringe as NAD+ at the same time.

• Keep glutathione refrigerated and protected from light; heat and light degrade it.
• Rotate injection sites to reduce soreness at any one spot.
• Do not combine glutathione and NAD+ in the same injection at the same time; space them out per your instructions.
• Follow the beyond-use date on your compounded vial and do not use it past that window.

Glutathione is well tolerated, and the main issue is injection-site reactions

For most people, glutathione sits on the safe side. With injections, the most common complaint is a local reaction at the injection site: redness, mild soreness, or a small bump. Oral doses can cause mild digestive upset, and very high oral intake (above roughly 2,000 mg a day) is more likely to cause stomach discomfort. Serious reactions are uncommon. As with any injectable, there is a small allergy risk, which is one more reason clinician oversight matters.

Glutathione is thought to support a brighter, more even skin tone by dampening the enzyme that makes melanin, rather than by bleaching. It supports the body's own antioxidant and liver-detox systems, and it recycles vitamins C and E. Glutathione is studied for antioxidant support and is not a treatment for any disease.

Within a route, your goal nudges the dose up or down

Route sets the ballpark, but why you are taking glutathione shifts where you land inside it. Most published oral protocols cluster into three loose bands: a lower band for everyday antioxidant support, a middle band for skin goals, and a higher band for periods of high oxidative stress.

These are patterns from the literature and clinic practice, not targets to chase. Injectable dosing does not map neatly onto these bands because it skips the gut, so a clinician sets the subcutaneous amount directly rather than scaling an oral number.

Give it weeks, not days

Glutathione works gradually. Antioxidant and skin goals build as levels rise with consistent dosing, so most protocols run for weeks. Oral and injectable routes generally ask for a similar stretch of patience; an in-clinic IV can feel more immediate because it delivers a large dose at once.

• Skin-tone changes are usually described over roughly 4 to 8 weeks of steady use, and consistency helps them hold.
• General antioxidant and energy goals build over a similar multi-week window, so track them week to week.
• Consistency matters more than dose size; missed weeks reset the clock more than a slightly lower number does.
• If nothing has shifted after a fair trial, that is worth raising with your prescriber rather than pushing the dose higher.

Food and a few cofactors support your own glutathione, but do not replace a dose

Your body makes glutathione from three amino acids: cysteine, glutamate, and glycine. Diet and a handful of nutrients can support that production, which is a reasonable baseline habit, but eating your way to a specific therapeutic level is not realistic. Digestion breaks down most food-borne and swallowed glutathione before it reaches the bloodstream intact, which is the same reason injectable and IV routes exist. Treat food as support around a dose, not as a substitute for one.

• Sulfur-rich and glutathione-containing foods people point to include garlic, broccoli, asparagus, spinach, and avocado.
• Cysteine is the usual rate-limiting building block, which is why NAC (N-acetylcysteine) is often discussed as precursor support.
• Vitamin C and selenium are commonly named cofactors that help the body recycle and use glutathione.
• Alcohol and smoking pull the other way by adding to the oxidative load your glutathione has to handle.

pru dispenses glutathione as a prescribed at-home injection, priced at cost

We built pru so the dose is not a guessing game. At pru, glutathione is a prescribed, 503A-compounded, pharmacy-grade product you inject at home under the skin. A licensed physician reviews your intake and sets your dose and schedule, and your exact amount is printed on the pharmacy label. That is the number you follow, not a range from an article. Our partner is a state-licensed 503A compounding pharmacy, and each vial is made and labeled as an individualized prescription.

That model sits between three alternatives people usually weigh. Unregulated "research-grade" vials sold online come with no clinician, no label you can trust, and no accountability, and that is the real risk. Over-the-counter oral supplements are convenient, but their absorption is limited and debated, so a lot of the dose never lands. In-clinic IV drips deliver the dose well, but they are expensive and require you to show up in person, repeatedly.

On price, our model is simple. A flat monthly membership funds the platform, and every therapy is priced at cost, itemized, with no markup on the medicine. You can see the current breakdown on our pricing page, start with the glutathione product page, or explore the cellular health category.

Looking into how to support your antioxidant and skin health is a smart, proactive move, and pru exists to make that informed choice the accessible one: licensed physicians, pharmacy-grade medicine, and at-cost pricing on one path. When you are ready to take the next step, we make it a supervised one. Prescribed, at-home, at-cost. That is the lane.

Related reading

• Glutathione benefits
• Glutathione side effects
• Glutathione vs NAD+
• Where to buy glutathione
• see it on pru

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