NutraBio · Betaine · Capsules
Is NutraBio Betaine Anhydrous Capsules underdosed?
Verdict
1–3 g a dayas the label directs · studies use 2.5 g/day of betaine anhydrous
Effective doseTaken as the label directs (1–3 servings a day, 1 g each), it gives 1–3 g a day; studies use 2.5 g/day. The least the directions give (1 g) is below that range; the most reaches it.
One capsule gives 500 mg, so reaching the low end of what studies use (2.5 g) takes 5 capsules a day; it ranks 6th of 8 betaine supplements here by dose.
5 capsules a day reach 2.5 g.
What the label says
- Betaine Anhydrous per serving
- 1 g in 2 capsules
- Servings a day
- 1–3 servings a day
- Betaine Anhydrous a day, as directed
- 1–3 g
- Research dose
- 2.5 g/day Evidence: Moderate
Suggested Use: Take 2 capsules, 1 to 3 times daily, as needed, preferably with meals.
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 | 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 (this product) | 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 278721, 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.