NOW Reports Testing on Brands of Alpha Lipoic Acid
This report is NOW’s fifth in 2020 regarding suspect brands whose main sales appear to be on Amazon. Previous reports include: CoQ10, SAMe, Acetyl-l-Carnitine, and Phosphatidyl Serine. In October 2020, NOW purchased two samples of each Alpha Lipoic Acid (ALA) product listed below on Amazon. We tested each product internally on our HPLC (High-Performance Liquid Chromatography) instrument by the test method known as RP-HPLC with UV detection. We also sent the same lot of each product to Eurofins, which is a recognized and independent quality laboratory, to test by the same method.
Results were actually better than expected compared to prior reports, where average potencies were often below 50% of label claims. For ALA, NOW brand tested at 110% and the other 13 brands combined to average 69% of label claim. Six out of these 13 brands were under 75% potency. All of these products listed were legally unacceptable as cGMP’s (current Good Manufacturing Practices) require minimum 100% potency tested at label claims. Given that many consumers rely on Amazon for dietary supplement purchases, the finding of significant quality concerns in every category we have tested raises profound concerns.
NOW adds significant overages to all supplement products in order to exceed label claims through the listed “Best by” date. For ALA, NOW adds min. 5% overage to always test over 100% of label claim. This is normal for NOW, but not standard practice for many brands. NOW also tests all ALA products in-house for heavy metals, micro (E-coli, Salmonella spp., total bacteria, etc.), and other impurities. This assures that the end product is safe and tested to meet full potency label claims.
⚠︎ = potency claims not met or poor results
|Amazon ALA 2020 Nov Analysis||Count||Lot #||Expir. Date||Label Claim||NOW Results||Eurofins Results||Av % Result|
|NOW (Plus Formula)||120 Vcaps||3154580||04/23||600 mg||659 mg||661 mg||110%|
|⚠︎Absonutrix (Code barely legible)||60 Caps||AS51618.1||05/21||600 mg||11 mg||20.9 mg||5%|
|⚠︎AMVILABGA||60 Caps||347095||07/23||600 mg||540 mg||591 mg||94%|
|⚠︎Best Naturals NJ||120 Caps||62053||06/23||600 mg||402 mg||433 mg||70%|
|⚠︎Boostceuticals NY||180 Caps||260218||02/22||300 mg||128 mg||92.6 mg||37%|
|⚠︎BRI NY – Expired next month||120 Caps||2017-01628||10/20||250 mg||224 mg||230 mg||91%|
|⚠︎Health Thru Nutrition NY||120 Caps||0361 9121||01/22||600 mg||559 mg||561 mg||93%|
|⚠︎Mental Refreshment, MD||180 Caps||23072004.4||08/22||600 mg||559 mg||579 mg||95%|
|⚠︎Nova Nutritions NJ||120 Caps||120062016||06/23||600 mg||404 mg||430 mg||70%|
|⚠︎NusaPure FL||180 Caps||2005001||04/23||600 mg||557 mg||594 mg||96%|
|⚠︎Sun Pure NJ – Expired on arrival||120 Caps||AV -8070301||07/20||600 mg||375 mg||298 mg||56%|
|⚠︎Superior Labs UT||120 Caps||006271||07/22||600 mg||565 mg||599 mg||87%|
|⚠︎VitaDirect UT||120 Caps||20032662||07/22||300 mg||253 mg||268 mg||87%|
|⚠︎We Like Vitamins Ml||180 Caps||10022001||07/24||600 mg||49 mg||49.3 mg||8%|
|One brand tested was over 100% potency and not included in above.|