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Our verdict
If you are going to take glutathione, take a registered capsule with a stated dose, and never an injection. Our top pick is Pure Form S-Acetyl Glutathione (83/100): registered, fully disclosed, and 500 mg a day for about ₱23.
On a budget, The Diet Coach Ultra Gluta Glow (63/100) gives the same 500 mg for less, with a thinner listing. TGP (77/100) has the most honest listing of all, but only 100 mg per capsule.
No product scored 90. Almost every listing we read made whitening or “clinically proven” claims that the evidence does not support.
Glutathione is the Philippines’ best-known “whitening” supplement, and the category where marketing has drifted furthest from evidence. Capsules promise lighter skin in weeks, labels advertise tens of thousands of milligrams, and salons sell intravenous “gluta drips”. Meanwhile the FDA Philippines record is full of warnings: when we searched it, 247 FDA advisories mentioned glutathione, from unregistered capsules to whitening soaps.
247
FDA Philippines advisories mention glutathione. Many of the most recent warn against unregistered gluta capsules sold online.
| Pure Form | TGP | Nuwhite | Diet Coach | |
|---|---|---|---|---|
| Score | 83/100 | 77/100 | 69/100 | 63/100 |
| Our rating | ||||
| Best for | Most people | Honest, low dose | Pharmacy brand | Lowest cost per mg |
| Glutathione per day | 500 mg | 100 mg | 200 mg | 500 mg |
| Form | S-acetyl | Reduced L-glutathione | S-acetyl | L-glutathione |
| Whitening claims | Yes | None | Yes | Implied |
| FDA no. in listing | Yes | No | No | No |
| Price per gram of glutathione | ₱46.64 | ₱173 | ₱350 | ₱33.27 |
| Shop | Check price | Check price | Check price | Check price |
Never inject it: what the FDA says about gluta drips
This matters more than any capsule comparison. In FDA Advisory No. 2019-182, the FDA Philippines warned that there are no published clinical trials of injectable glutathione for skin lightening and no guidelines on dosing. The FDA has not approved any injectable product for skin lightening. Injectable glutathione is approved in the Philippines only as an add-on treatment in cisplatin chemotherapy.
The advisory lists the risks of using it for whitening: toxic effects on the liver, kidneys and nervous system, the possibility of Stevens-Johnson syndrome (a severe skin reaction), and the risk of infections such as HIV and hepatitis when it is given by non-medical staff or in non-sterile settings. Drips often add high-dose vitamin C, which the advisory notes can cause kidney stones and has led to haemodialysis in people with G6PD deficiency.
Does oral glutathione actually work?
For years the question was whether swallowed glutathione is absorbed at all. The evidence now says some of it may be, and that the effect on skin is small and inconsistent.
- It can raise the body’s levels. A six-month trial (Richie and colleagues, 2015) found 1,000 mg a day raised glutathione stores in blood and cells; levels fell back within a month of stopping. The trial was funded by an ingredient manufacturer and measured levels, not skin.
- The skin results are modest. In the best-known whitening trial (2012), 60 people took 500 mg a day for four weeks. Skin lightened more than with placebo at only two of six sites measured, and the authors said long-term safety had not been established.
- Reviews call it inconclusive. A 2019 systematic review concluded the effectiveness of oral glutathione remains questionable because of limited absorption, and that the evidence is not strong enough to settle the question.
So: trial doses were 250 to 1,000 mg a day, effects on skin colour were small and patchy where they appeared, and the best evidence comes from small, often industry-linked studies. If you try it, choose a stated dose in that range and judge the result honestly after two or three months.
The milligram trick: “42,000 mg glutathione”
Some of the best-selling listings advertise enormous numbers in their titles. One we reviewed is sold as “Premium 42,000mg Japan Glutathione”. Its own description says each capsule has 400 mg of glutathione, and its own ingredient list does not mention glutathione at all. The 42,000 figure is the total weight of all the active ingredients across the whole bottle: 700 mg per capsule multiplied by 60 capsules. The FDA has issued an advisory against an unregistered glutathione product whose name claims “500,000mg”.
The only number that matters is milligrams of glutathione per capsule, and how many capsules you take a day. Titles routinely quote the whole capsule weight instead: two of our picks advertise “700mg” and “500mg” when the glutathione inside is 500 mg and 200 mg.
L-glutathione, S-acetyl, liposomal: does the form matter?
- Reduced L-glutathione is the form used in the main absorption and skin trials cited above.
- S-acetyl glutathione is a modified form marketed as better absorbed. Listings that say it is “clinically proven to be more potent” did not name a study, and we did not find head-to-head trials in people to support that claim.
- Liposomal products wrap glutathione in fat particles, again marketed for absorption, with limited independent evidence.
In practice, a stated dose of a registered product matters far more than the form on the label.
What the claims on gluta listings actually mean
| Claim | What it covers | Key exclusion |
|---|---|---|
| FR- number, verified | Registered as a food supplement and may be sold | No approved therapeutic claims, including treating skin conditions |
| “Whitening” / “lightens skin” | A cosmetic-sounding promise on a food supplement | Evidence is modest; the FDA has warned repeatedly against whitening products |
| “Clinically proven” / “scientifically proven” | That the seller says a study exists | No study named in any listing we read |
| “42,000 mg” / “500,000 mg” | Total weight of all ingredients in the bottle | Not milligrams of glutathione per dose |
| “Oral sunblock” | Ingredients such as Polypodium leucotomos | Not a substitute for sunscreen |
| “Detox” / “liver cleanse” | Nothing specific | Not an approved claim for a food supplement |
| Cures cancer, HIV, Parkinson’s | Nothing a supplement may claim | A disease claim on a food supplement |
Gluta listings we would not buy from
These products were for sale on Shopee when we checked, or are named in recent FDA advisories. None of them could be a pick.
| Product | What the FDA record shows | Our check |
|---|---|---|
| Omilay glutathione capsules | FDA Advisories No. 2025-0709, 2025-1385 and 2025-1388 against unregistered Omilay glutathione products, plus at least six more advisories across the brand | Fails our advisory check |
| SoftHer Skin Whitening x10 Glutathione + NAC | FDA Advisory No. 2026-0012: unregistered food supplement | Fails our advisory check |
| Aishi Tokyo White C-Block (“42,000mg”) | No registration found. Ingredient list omits glutathione; specification panel lists an expiry date of 01/04/2025 | No registration found |
| “KIRK//LAND” glutathione whitening capsules | No registration found for a product sold under a name that imitates a well-known brand | No registration found |
| Ozmolts Glutathione Collagen capsules | No registration found. Listed at 91% off | No registration found |
| Any glutathione injection or IV drip | FDA Advisory No. 2019-182: no injectable product approved for skin lightening | Do not use |
Our picks
Best overall
1. Pure Form S-Acetyl Glutathione (90 capsules)
83/100
Registered: FR-4000012098884
500 mg glutathione a day
Full amounts listed
₱46.64 per gram of glutathione
| Registered as | Food supplement, FR-4000012098884 (valid to January 2031) |
| FDA number in listing? | Yes, plus the company’s FDA licence number |
| Per capsule | 500 mg S-acetyl glutathione + 100 mg hyaluronic acid + 100 mg hydrolyzed collagen |
| Daily dose | One capsule (90-day supply) |
| Seller | Pure Form official store (Shopee Mall) |
| Price | ₱2,099 for 90 capsules (about ₱23 a day) |
The most complete glutathione listing we read. It prints a registration number that matches the FDA record exactly, gives every ingredient with its amount, and delivers 500 mg of glutathione a day, the dose used in the best-known skin trial. A 90-day pack at about ₱23 a day is also among the better values from an official store.
It lost points for its claims. “Scientifically proven to reduce melanin index to whiten skin” and “clinically proven to be more potent than L-Glutathione” name no study, and the trial evidence for oral glutathione and skin is modest and mixed (see below). The title also says “700mg of Gluta”, when 500 mg of the 700 mg is glutathione.
Why it scored well
- Registration and licence numbers in the listing, both matching
- Every ingredient listed with its amount
- 500 mg a day at around ₱23
Watch-outs
- “Scientifically proven” and “clinically proven” with no study named
- Title says “700mg of Gluta”; the glutathione is 500 mg
- Also contains collagen and hyaluronic acid, in small amounts
Most honest listing
2. TGP L-Glutathione + Alpha-Lipoic Acid (10 capsules)
77/100
Registered: FR-4000012350957
100 mg glutathione a day
No whitening claims
₱173 per gram of glutathione
| Registered as | Food supplement, FR-4000012350957 (valid to February 2031) |
| FDA number in listing? | No. We found it on the FDA portal |
| Per capsule | 100 mg reduced L-glutathione + 25 mg alpha-lipoic acid |
| Daily dose | One capsule |
| Seller | TGP official store (Shopee Mall) |
| Price | ₱173 for 10 capsules (₱17.30 a day) |
If we were scoring honesty alone, this would win. The listing makes no whitening promises at all. It gives the dose, the full ingredients on the box, storage instructions, possible side effects, and precautions that actually matter, including a caution for people with diabetes because alpha-lipoic acid can affect blood sugar. It even says it is “not intended as a substitute for a balanced diet”.
The catch is the dose. One capsule gives 100 mg of glutathione, below the 250 to 1,000 mg used in trials, and at ₱17.30 a day it costs far more per milligram than the 500 mg products. Cheap per box is not the same as cheap per dose.
Why it scored well
- No whitening or “clinically proven” claims
- Real precautions, including diabetes and pregnancy
- Official generics store with Mall guarantees
Watch-outs
- Only 100 mg of glutathione per capsule
- Expensive per milligram despite the low box price
- The registration number is not in the listing
Pharmacy-store pick
3. Nuwhite S-Acetyl Glutathione with Collagen, Sodium Ascorbate & Vitamin E (30 capsules)
69/100
Registered: FR-4000010658990
200 mg glutathione a day
Precautions stated
₱350 per gram of glutathione
| Registered as | Food supplement, FR-4000010658990 (valid to December 2030) |
| FDA number in listing? | No. We found it on the FDA portal |
| Per capsule | 200 mg S-acetyl glutathione + 100 mg marine collagen + 150 mg sodium ascorbate + 50 mg vitamin E |
| Daily dose | One capsule |
| Seller | Watsons official store (Shopee Mall) |
| Price | ₱2,100 for 30 capsules (₱70 a day) |
A registered product sold by a major pharmacy chain’s official store, with every ingredient amount listed and clear precautions: adults only, not for pregnant or breastfeeding women. For people who want to buy from a pharmacy brand they recognise, it is a legitimate option.
But read past the title. “500mg” refers to the whole capsule; the glutathione is 200 mg. That makes it the most expensive product in this guide per milligram of glutathione, about seven times the price of our top pick. It also describes itself as a “whitening agent”.
Why it scored well
- Every ingredient listed with its amount
- Pregnancy and adult-use precautions
- Sold by Watsons’ official store
Watch-outs
- Title says “500mg”; the glutathione is 200 mg
- Most expensive per milligram of glutathione
- Contains marine collagen: not for seafood allergies
Best value
4. The Diet Coach Ultra Gluta Glow (30 tablets)
63/100
Registered: FR-4000011338857
500 mg glutathione a day
Box shows the dose
₱33.27 per gram of glutathione
| Registered as | Food supplement, FR-4000011338857 (valid to August 2030) |
| FDA number in listing? | No. We found it on the FDA portal |
| Per tablet (from the box photo) | 500 mg L-glutathione in a 1,200 mg tablet |
| Also contains | Vitamin E, vitamin B3, vitamin C, alpha-lipoic acid, rosehip extract (amounts not stated) |
| Seller | The Diet Coach official store (not Shopee Mall) |
| Price | ₱499 for 30 tablets (about ₱17 a day) |
The cheapest registered glutathione per milligram we found: 500 mg a day for about ₱17, nearly 30 percent less per milligram than our top pick. The box in the product photo shows the dose and carries the “No approved therapeutic claims” statement.
The listing itself is thin. The description gives no amounts, only ingredient names and promises of “the best skin anybody could ever dream of”. The store is the brand’s own but is not a Shopee Mall store, so it lacks Mall’s authenticity guarantee, and its chat response rate was 15 percent when we checked.
Why it scored well
- Cheapest per milligram among registered products
- 500 mg L-glutathione per tablet
- Brand’s own official store
Watch-outs
- Amounts only visible on the box photo
- No Shopee Mall guarantee on this store
- Hype in place of information in the description
Also considered
SnowCaps Premium L-Glutathione 500 mg (47/100). A registered, best-selling product from a Shopee Mall store, with a real 500 mg dose. Its listing, though, says glutathione has “a positive impact on” cancer, cataracts, asthma, liver problems, HIV and Parkinson’s disease: disease claims no food supplement may make. Its specification panel also gives the pack size as “700MG” and an expiry date of 05/29/2026, already past when we checked.
How to choose
- Check the dose: look for milligrams of glutathione per capsule, ideally 250 to 1,000 mg a day, not the capsule weight or a bottle total.
- Check the registration: on the FDA portal, then search the brand for advisories. This category has more warnings than any other we cover.
- Ignore “clinically proven” and “whitening” promises: no listing we read named a study.
- Pregnant or breastfeeding: several labels say not recommended. Talk to your doctor.
- Diabetic: if a product contains alpha-lipoic acid, ask your doctor first; it can affect blood sugar.
- Never use injections or drips for whitening.
How to take it
Follow the label, usually one capsule a day with water. In the trials, changes took weeks to months and faded after stopping. Store capsules tightly closed, away from heat and humidity, and check the expiry date when your order arrives. And whatever a supplement promises, keep using sunscreen. See our sunscreen label guide.
How we researched this guide
We searched Shopee for glutathione on October 11, 2026, checked more than a dozen brands against the FDA Philippines verification portal and its advisories, and read seven listings in full, including label photos. Each was scored with our published rubric; overlapping collagen-and-glutathione blends are covered in our collagen guide. Price per gram uses the glutathione amount stated in each listing or on its label.
Evidence was checked against FDA Advisory No. 2019-182, Richie et al. (European Journal of Nutrition, 2015), Arjinpathana and Asawanonda (2012), and the systematic review by Dilokthornsakul et al. (Journal of Cosmetic Dermatology, 2019).
Frequently asked questions
What is the best glutathione in the Philippines?
In our review, Pure Form S-Acetyl Glutathione scored highest (83/100): registered, fully disclosed, and 500 mg a day for about ₱23. The Diet Coach Ultra Gluta Glow gives 500 mg for less, with a thinner listing.
Does glutathione really whiten skin?
The evidence is weak. In the best-known trial, 500 mg a day for four weeks lightened skin more than placebo at only two of six sites, and a 2019 review called the evidence inconclusive.
Is glutathione injection safe for whitening?
No. FDA Philippines has not approved any injectable product for skin lightening and has warned of risks to the liver, kidneys and nervous system, severe skin reactions and infections.
How many mg of glutathione should I take?
Trials used 250 to 1,000 mg a day. Follow your product's label, and talk to your doctor if you are pregnant, breastfeeding, diabetic or on medication.
What does "42,000 mg glutathione" mean?
Usually the total weight of all ingredients across the whole bottle, not the glutathione in each capsule. Check the milligrams of glutathione per capsule instead.
Is S-acetyl glutathione better than L-glutathione?
It is marketed as better absorbed, but the listings making that claim named no study, and we found no head-to-head trials in people to support it.
How long does glutathione take to work?
Trials ran from four weeks to six months. Effects on skin, where seen, were small, and glutathione levels returned to normal within a month of stopping.
Can I take glutathione while pregnant?
Several labels say it is not recommended for pregnant or breastfeeding women. Ask your doctor.
Is glutathione with "oral sunblock" a replacement for sunscreen?
No. Keep using sunscreen. No supplement we reviewed replaces it.
How do I know if my glutathione is FDA registered?
Search the product or registration number on verification.fda.gov.ph, then search the brand for advisories. Over 200 advisories mention glutathione.
Is Omilay glutathione registered?
The FDA has issued advisories against several unregistered Omilay glutathione products, including Advisories No. 2025-0709, 2025-1385 and 2025-1388.
Are glutathione side effects common?
Labels in our review list mild stomach upset, nausea, headache and rare allergic reactions. Products with alpha-lipoic acid may affect blood sugar.