Performance
Betaine (TMG)
Also known as: Trimethylglycine, TMG, Betaine anhydrous
B
Evidence
Methyl donor supporting strength, power, and body composition. Also important for homocysteine metabolism.
Primary uses
- Strength
- Power
- Body composition
- Methylation
How it works
- Osmolyte protecting cells
- Methyl donor for homocysteine
- May increase power output
Dosage
- Typical range
- 2.5-6 g daily
- Timing
- Any time or pre-workout
- With food
- Optional
- Duration
- Safe long-term
- Special populations
- Athletes, high homocysteine
Forms
- Powder
- Capsules
Safety
Common side effects
- Fishy body odor at high doses
- GI upset
Contraindications
- None
Evidence notes
Emerging performance benefits
Grade B: Some human trials support key claims; further confirmation needed.
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