Best Betaine (TMG) Supplements 2026: Cost per Effective Dose
Top pick for Betaine (TMG): BulkSupplements Betaine Anhydrous Powder (1 kg) — 1.5g betaine (TMG) per 1 scoop (1.5 g), Third-party tested, cGMP, $0.07/day. Our best-value pick.
All Betaine (TMG) Supplements Compared
| Product | Brand | Dose / Serving | Cost / Day | Certification (as labelled) | Pick | Buy |
|---|---|---|---|---|---|---|
| BulkSupplements Betaine Anhydrous Powder (1 kg) | BulkSupplements | 1.5g betaine (TMG) / 1 scoop (1.5 g) | $0.07 | Third-party tested, cGMP | Best Value | Buy |
| Nutricost Betaine Anhydrous TMG Powder (500 g) | Nutricost | 1.5g betaine (TMG) / 1 scoop (~1.5 g, unmeasured by label) | $0.08 | 3rd-party tested (ISO lab) | Buy | |
| Vitamatic Betaine Anhydrous (TMG) Powder (250 g) | Vitamatic | 1.5g betaine (TMG) / 1 scoop (~1.5 g) | $0.10 | None stated | Buy | |
| Nutricost TMG (Trimethylglycine) 750 mg (120 caps) | Nutricost | 750mg betaine (TMG) / 1 capsule | $0.28 | 3rd-party tested (ISO lab) | Buy | |
| NOW Foods TMG Betaine 1,000 mg (Tablets) | NOW Foods | 1,000mg betaine (TMG) / 1 tablet | $0.43 | cGMP (NPA-certified facility) | Buy | |
| Life Extension TMG 500 mg (100 Liquid Veg Caps) | Life Extension | 500mg betaine (TMG) / 1 capsule | $1.00 | GMP; reputable manufacturer | Buy |
Registry check · Betaine (TMG)
Does anyone independently verify Betaine (TMG) supplements?
We did not find these products in the NSF, USP or Informed Sport registries. Yet 3 of them advertise “third-party testing” without naming the certifier that did it — wording no public registry can confirm or deny. A factory-level claim such as “cGMP” audits the plant, not the Betaine bottle you would actually receive.
The 6 products on this page checked against all 5,317 US NSF, USP and Informed Sport listings, 2026-08-25. Full method and limitations.
What Betaine labels show
Priced per day, these betaine products run $0.07 to $1.00 — a 14× gap between the cheapest and dearest betaine here, across 5 brands.
Our Picks
Best Value: BulkSupplements Betaine Anhydrous Powder (1 kg)
1.5g betaine (TMG) per 1 scoop (1.5 g). Third-party tested, cGMP. $0.07/day. 666 servings per container at $28.97.
The shelf · Betaine
Capsules cost 6.8× what powder does for the same Betaine
The molecule is the same either way; the premium buys encapsulation. Across these 6 Betaine products that gap runs from $0.07 a day (BulkSupplements Betaine Anhydrous Powder (1 kg)) to $1.00 (Life Extension TMG 500 mg (100 Liquid Veg Caps)), and BulkSupplements Betaine Anhydrous Powder (1 kg) is the cheapest powder of the 3 here if you will actually weigh a dose.
Method: the 6 Betaine products above, compared on label facts, serving size, servings per container, form, price. Not a dosing recommendation.
How these 6 Betaine (TMG) products were ranked
Not one of these 6 betaine products could be confirmed in the NSF, USP or Informed Sport registries, so verification separates none of them and the ranking falls to cost per day at the labelled serving. Commission does not enter it: the rate is the same whichever betaine you buy. Full methodology.