Betaine (TMG)
Performance
Also known as: Trimethylglycine, TMG, Betaine anhydrous
B
Grade B💊 2.5-6 g daily🎯 4 primary uses🔗 2 synergies⚠️ Review warnings
Levels upFitness+50 pts
Overview
Methyl donor supporting strength, power, and body composition. Also important for homocysteine metabolism.
Primary Uses
StrengthPowerBody compositionMethylation
Frequently Asked About Betaine (TMG)
How much Betaine (TMG) should I take?
The typical effective range is 1,500-3,000 mg/day. Individual needs vary based on age, body weight, diet, and goals — start at the lower end and adjust based on response. Always consult a healthcare provider before starting a new supplement.
When is the best time to take Betaine (TMG)?
Any time or pre-workout. Consistency matters more than perfect timing — pick a daily anchor (e.g. with breakfast or before bed) and stick with it.
Should I take Betaine (TMG) with food?
Optional.
Does Betaine (TMG) interact with medications?
Yes — known interactions include None significant. If you take any prescription medication, talk to your doctor or pharmacist before starting Betaine (TMG).
What does Betaine (TMG) pair well with?
Betaine (TMG) stacks well with Creatine and B vitamins — these combinations either improve absorption or work synergistically toward common goals.
Who should not take Betaine (TMG)?
Betaine (TMG) should be avoided or used with caution by people with None. Pregnant or breastfeeding women should consult a healthcare provider before use.
What are the side effects of Betaine (TMG)?
Most people tolerate Betaine (TMG) well. The most commonly reported side effects are Fishy body odor at high doses and GI upset. Side effects are usually dose-dependent — lowering the dose often resolves them.
Dosage
Typical range
2.5-6 g daily
Timing
Any time or pre-workout
With food
Optional
Dose Tiers
Moderate
500-1,500 mg/day
Optimal
1,500-3,000 mg/day
Therapeutic
6,000 mg/day
Upper Limit
Body odor at very high doses
Duration
Safe long-term
Special Populations
Athletes, high homocysteine
Research & Studies
Search the literature now
We haven’t curated landmark studies for Betaine (TMG)yet — one-click into the primary literature here. PubMed (RCTs) is usually the highest-signal starting point.
Mechanism of Action
- • Osmolyte protecting cells
- • Methyl donor for homocysteine
- • May increase power output
Evidence Quality
Evidence Grade B
Emerging performance benefits
Safety & Contraindications
Serious Warnings
- • None
Contraindications
- • None
Common Side Effects
- • Fishy body odor at high doses
- • GI upset
Pregnancy & Breastfeeding
Consult healthcare provider
Liver & Kidney Notes
May support liver
Interactions
💊 Medications
- • None significant
🧪 Supplements
- • Works with B12, folate for methylation
🍽️ Food & Alcohol
- • Beets are source
Stacking & Synergies
Buying Guide
What to Look For
- • Betaine anhydrous
Standardization Markers
Betaine anhydrous content
Adulteration risk
Low
Practical Notes
- • Different from betaine HCl (stomach acid)
- • May cause fishy odor
Tags
performancemethylationstrength
Top Products with Betaine (TMG)
Highest-scored catalog products containing Betaine (TMG), ranked by our scoring engine.
Methyl-Guard®Thorne93
Methyl-Guard PlusThorne91
Methyl-Guard Plus®Thorne91
BULK Pre-WorkoutTransparent Labs90
More in Performance
Other ingredients in the Performance category.
Agmatine Sulfate
Arginine metabolite with nitric oxide and pain-modulating effects. Enhances pumps.
Arachidonic Acid (ARA)
Omega-6 fatty acid that amplifies exercise-induced muscle signaling. Increases training response but also inflammation.
BCAAs
A branched-chain amino acid blend in a 2:1:1 leucine-to-isoleucine-to-valine ratio, formulated in instantized (micronized) form for improved solubility. BCAAs support muscle protein synthesis and may reduce exercise-induced fatigue, though whole protein sources provide comparable benefits at lower cost.
Beetroot / Nitrates
Dietary nitrates converted to nitric oxide for improved endurance and blood flow. Can enhance exercise efficiency.
Beta-Alanine
Increases muscle carnosine for buffering acid during high-intensity exercise. Delays fatigue in 1-4 minute efforts.
Beta-Hydroxybutyrate (BHB)
Exogenous ketone body that can elevate blood ketone levels. Used for energy, cognitive function, and supporting ketogenic diets.
Last reviewed: September 2026 by the Formulate Research Team. Sources cited above; methodology and scoring criteria published here.
Cite this page
Formulate Research Team. (2026, September). Betaine (TMG) — Evidence-Based Supplement Guide. Formulate Supplement Encyclopedia. https://app.formulate-health.app/learning/supplements/betaine-tmg
Educational content based on published research and our scoring methodology. Not medical advice — consult a qualified healthcare provider before starting, stopping, or changing supplements, especially if you take medications, are pregnant, or have a medical condition.