NOW Sports · Betaine · Powder
Is NOW Sports Betaine Powder underdosed?
1 serving = 1.6 g of powderDirections: 2 servings a dayLabel as of 18 Jul 2023 · NIH DSLD
Verdict
3.2 g a dayas the label directs · studies use 2.5 g/day of betaine anhydrous
Effective doseTaken as the label directs (2 servings a day, 1.6 g each), it gives 3.2 g a day; studies use 2.5 g/day.
One serving gives 1.6 g, so reaching the low end of what studies use (2.5 g) takes 1.6 servings a day; it ranks 2nd of 8 betaine supplements here by dose.
What the label says
- Betaine Anhydrous per serving
- 1.6 g in 1.6 g of powder
- Servings a day
- 2 servings a day
- Betaine Anhydrous a day, as directed
- 3.2 g
- Research dose
- 2.5 g/day Evidence: Moderate
Suggested Usage: Mix 1/2 level teaspoon into water or your favorite beverage twice daily.
More about betaine anhydrous: forms, timing and the studies behind the dose.
Same category, compared
All 8 betaine supplements we checked, ranked by dose (commission never changes the order). Studies use 2.5 g/day of betaine anhydrous; servings counted to 2.5 g.
| Product | Per serving | Servings to reach it | Form |
|---|---|---|---|
| Best Naturals Betaine Anhydrous Powder | 2 g | 1.3 | Powders |
| NOW Sports Betaine Powder (this product) | 1.6 g | 1.6 | Powders |
| Muscle Feast TMG Betaine Anhydrous | 2.2 g | 1.1 | Powders |
| NOW TMG Betaine 1,000 mg Tablets | 3 g | 1 or less | Tablets |
| BulkSupplements Betaine Anhydrous (TMG) | 1.5 g | 1.7 | Powders |
| NutraBio Betaine Anhydrous Capsules | 1 g | 2.5 | Capsules |
| Nutricost Betaine Anhydrous Powder | 1.5 g | 1.7 | Powders |
| Nutricost TMG 750 mg Capsules | 750 mg | 3.3 | Capsules |
Where the reference doses come from
- Betaine Anhydrous, 2.5 g/day: Cholewa et al., 2013; Hoffman et al., 2009; Zawieja et al., 2024.
- Label data: National Institutes of Health, Office of Dietary Supplements. Dietary Supplement Label Database, 2026. https://dsld.od.nih.gov/. Label 292044, including its servings a day.
For a supplement taken every day we judge the most the label's directions give in a day, and show the least. Read the full methodology or the corrections log.