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Betaine supplements

Betaine works through daily use over weeks, so what matters is how much you take in a day. For each product we take the label's own directions (how much per serving, how many servings a day) and compare the daily amount with what studies use: 2.5 g/day. Products that reach that range when taken as directed come first, then by the least their directions give a day (counted only up to the top of the range); commission never changes the order.

Powders (5)

ProductPer servingServings a dayPer day, as directedVerdictProof
Best Naturals Betaine Anhydrous Powder · label 21 Jul 20222 g3–4 servings6–8 gEffective doseLabel claim only
NOW Sports Betaine Powder · label 18 Jul 20231.6 g2 servings3.2 gEffective doseLabel claim only
Muscle Feast TMG Betaine Anhydrous · label 23 Feb 20222.2 g1–2 servings2.2–4.4 gEffective doseLabel claim only
BulkSupplements Betaine Anhydrous (TMG) · label 22 Mar 20241.5 g in one serving1–2 servings1.5–3 gEffective doseLabel claim only
Nutricost Betaine Anhydrous Powder · label 24 Jan 20241.5 g in 1 scoop (1.5 g)1 serving1.5 gBelow research doseLabel claim only

Capsules (2)

ProductPer servingServings a dayPer day, as directedVerdictProof
NutraBio Betaine Anhydrous Capsules · label 13 Dec 20221 g in 2 capsules1–3 servings1–3 gEffective doseLabel claim only
Nutricost TMG 750 mg Capsules · label 21 Jul 2022750 mg in 1 capsule1 serving750 mgBelow research doseLabel claim only

Tablets (1)

ProductPer servingServings a dayPer day, as directedVerdictProof
NOW TMG Betaine 1,000 mg Tablets · label 22 Nov 20243 g in 3 tablets0.67–2 servings2–6 gEffective doseLabel claim only

8 products. Where the directions give a range, the verdict judges the most they give in a day. Read the betaine anhydrous guide for the studies behind the dose. "Proof" is a published independent lab test, a certifier listing we read on the certifier's own site (usually for listed lots only), or "Label claim only" when we found neither.