SAM-e (S-Adenosyl methionine) supplements continue to face quality challenges in the market. Recent tests have revealed inconsistencies in product formulations and labeling accuracy. Some products contain significantly less SAM-e than claimed on their labels, while others show variations in enteric coating integrity.
The tosylate and disulfate tosylate forms of SAM-e are commonly used in supplements. However, not all manufacturers clearly distinguish between these forms on their product labels, which can confuse consumers seeking specific formulations.
Enteric coating plays a crucial role in the effectiveness of SAM-e supplement. It protects the compound from stomach acid, allowing for proper absorption in the intestines. Unfortunately, some products exhibit subpar coating quality, potentially reducing their efficacy.
These findings underscore the importance of robust quality control measures in the SAM-e supplement industry. Consumers may benefit from choosing products from reputable manufacturers who prioritize third-party testing and transparency in their production processes.
Natural product manufacturer NOW has reported ongoing quality and labeling failures in SAM-e supplements sold on Amazon. In their latest testing, 20 out of 24 samples failed potency tests, with some containing none of the active ingredients. This follows similar findings from 2020, indicating that quality issues persist in the market.
Detailed Testing Results
The table below summarizes the brands tested, their claimed SAM-e potency, and the average potency results from NOW’s and Eurofins’ analyses:
| Brand Name | Claimed Potency per Serving | Average Potency Found | Percentage of Label Claim | Notes |
|---|---|---|---|---|
| Actif American Health | 400 mg | 37 mg | 9% | Failed potency testing |
| aSquared, FL | 400 mg | 70 mg | 18% | Failed potency testing; repeat offender from 2020 |
| Bestvite, CA | 200 mg | 214 mg | 107% | Passed potency testing |
| Bulk Supplements, NV | 400 mg | 177 mg | 44% | Failed potency testing |
| Clear Formulas, FL | 500 mg | 31 mg | 6% | Failed potency testing |
| Colorful Energy, NY | 400 mg | 12 mg | 3% | Failed potency testing |
| Florida Herbal Pharmacy | 500 mg | 0 mg | 0% | Failed potency testing; contained zero potency |
| Healing Awakening, FL | 500 mg | 33 mg | 7% | Failed potency testing |
| Healthy Way, FL | 400 mg | 38 mg | 10% | Failed potency testing; repeat offender from 2020 |
| InFusions, FL | 400 mg | 40 mg | 10% | Failed potency testing |
| Jovianoy Gummies | 533 mg | 0 mg | 0% | Failed potency testing; contained zero potency |
| Kanacoufce, CA | 600 mg | 0 mg | 0% | Failed potency testing; contained zero potency |
| Mono Herbs UK/India | 300 mg | 0 mg | 0% | Failed potency testing; repeat offender from 2020 |
| NasaBe’Ahava, FL | 500 mg | 51 mg | 10% | Failed potency testing; repeat offender from 2020 |
| Natures Craft, FL | 200 mg | 166 mg | 83% | Passed potency testing |
| Natures Trove, NJ | 400 mg | 408 mg | 102% | Passed potency testing |
| Newt Nutrition, FL | 500 mg | 102 mg | 20% | Failed potency testing |
| NOW | 400 mg | 437 mg | 109% | Passed potency testing; added overages to ensure full potency |
| Ojos Labs, FL | 500 mg | 47 mg | 9% | Failed potency testing |
| Phytoral, FL | 200 mg | 192 mg | 96% | Passed potency testing |
| Shevat Vitamins, FL | 500 mg | 20 mg | 4% | Failed potency testing |
| SHIZAM Gummies | 500 mg | 0 mg | 0% | Failed potency testing; contained zero potency |
| Spliferkou, CA | 900 mg | 0 mg | 0% | Failed potency testing; contained zero potency |
| Superior Health, OH | 200 mg | 92 mg | 46% | Failed potency testing; repeat offender from 2020 |
Note: Brands highlighted in yellow are repeat offenders from 2020.
Key Findings
- High Failure Rate: 20 out of 24 products failed potency testing, with 16 containing less than 20% of the labeled potency.
- Zero Potency Products: Six brands, including both gummy products, contained no detectable SAM-e.
- Repeat Offenders: Five brands that failed in 2020 continued to show low potency, indicating no improvement.
- Geographical Concentration: 48% of failing samples were from Florida-based brands, some with nearly identical lot numbers, suggesting potential manufacturing issues.
Industry Response
Loren Israelsen, president of the United Natural Products Alliance (UNPA), described the results as “extremely disappointing” and emphasized the importance of product quality and integrity, especially given the current political focus on dietary supplements.
Where to Buy High-Quality SAM-e Ingredients?
Cima Science Co., Ltd. is a leading SAM-e powder manufacturer in China. We offer high-quality ingredients at wholesale prices. We provide free samples and third-party lab testing reports for purity, heavy metals, and microbiological parameters.
Our GMP-compliant factory and R&D lab ensure top quality and safety. We welcome visits to our facilities.
Contact Cima Science today for inquiries or to request a free sample.
