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NOW Tests Glutathione Sold by Amazon

Most Recent NOW® Tests on Products from Amazon Show Improvement, but Quality Lapses Continue — Glutathione Products Testing Found Three Potency Failures and Two Heavy Metal Issues

The results are in on NOW’s latest testing of lesser-known supplement brands purchased on Amazon, this time on Glutathione. Overall, quality is improved, though the tests found three potency failures and two heavy metal issues among the 19 brands tested.

As with prior analyzing, NOW performed one set of testing in the company’s own quality labs as well as independently at Eurofins. Both labs tested all products by HPLC analysis. NOW customarily includes its own brand in the group of products being examined.

Emily Bright brand labels Glutathione as 2000 mcg (not MG), which is only 2 mg per capsule. Skin Whitening Glutathione from Northern Crown Cosmetics makes no label claim for Glutathione despite the product’s name; only 20 mg per capsule was found. Eco-Taste, a new brand made and sold direct from China, had the lowest test result of all the brands tested.

⚠︎ = potency claims not met or poor results

Glutathione Amazon Testing by NOW October 2021 Size Lot # Label Claim NOW Results
# 1 Test
Eurofins
Results
Av %
Result
NOW Foods 30 Veg Caps 3198911 500 mg 530 mg 517 mg 105%
Amazon Elements, WA 60 Veg Caps AN4A13101 500 mg 528 mg 550 mg 108%
⚠︎ Amazing Nutrition, NJ 60 Veg Caps 21053104 ? 500 mg 396 mg 400 mg 80%
aSquared Nutrition, FL 200 Veg Caps 30312 250 mg 234 mg 251 mg 97%
BioSchwartz Formula, NY 60 Veg Caps 5182076 250 mg 262 mg 270 mg 106%
⚠︎ Eco-Taste, China 120 Caps GG-210721 500 mg 268 mg 282 mg 55%
⚠︎ Emily Bright Formula, DC 60 Veg Caps 0524212A 2 mg 2 mg 1 mg 75%
Fresh Nutrition, CA 90 Veg Caps G21005003 167 mg 236 mg 239 mg 140%
Health Thru Nutrition, NY 60 Veg Caps 2121 0201 500 mg 535 mg 529 mg 106%
NasaBe’Ahava, FL 200 Veg Caps 20600 250 mg 234 mg 237 mg 94%
Nutricost, UT 240 Gel Caps 21052016 500 mg 519 mg 551 mg 114%
Nutriessence, NV 200 Caps 1032115 250 mg 256 mg 265 mg 104%
Nutriflair, WA (Setria) 60 Veg Caps L658933 350 mg 337 mg 355 mg 100%
Nutrivein, WA (Setria) 60 Veg Caps L659670 350 mg 347 mg 355 mg 100%
Skin Whitening Glutathione 120 Veg Caps 72921NOW ?? 22 mg 19 mg NA
Toniiq, IL 120 Veg Caps 20721 500 mg 447 mg 479 mg 93%
Vitaraw Formula, CA 120 Veg Caps 210708 250 mg 244 mg 248 mg 98%
Welessentials, CA (Setria) 60 Veg Caps R0818 250 mg 286 mg 295 mg 116%
We Like Vitamins, MI 200 Gel Caps 11062102 250 mg 207 mg 258 mg 93%
Welluxa Lipo Formula, NV 60 Veg Caps 2BLG60 350 mg 334 mg 341 mg 97%

Two brands failed heavy metal testing: Emily Bright and Northern Crown both tested above Prop 65 levels for lead. The other 17 brands were all below Prop 65 levels.

“The quality of these lesser-known brands purchased on Amazon is greatly improved, but we are still finding unacceptable lapses,” said Dan Richard, NOW’s Vice President of Global Sales and Marketing.

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