Betaine Anhydrous for Strength and Power

1. What Is Betaine?

Betaine anhydrous, also called trimethylglycine (TMG), is found in beets, spinach and whole grains. It acts as an osmolyte that helps cells maintain hydration and as a methyl donor in metabolism.

2. What Research Shows

3. Dosage and Safety

Most studies use 2.5 g per day, often split. Higher doses may slightly raise LDL cholesterol in some people. Digestive upset is possible.

4. How Betaine May Help Performance

Betaine acts as an osmolyte, helping cells retain water and maintain hydration under stress, which may support muscle function during intense exercise. It's also a methyl donor that helps convert homocysteine to methionine and may influence creatine synthesis. Some studies show small improvements in power output and training volume, while others find no effect. Results may depend on training status and dose.

Because effects are modest, betaine is best viewed as a supporting ingredient rather than a primary supplement.

5. Betaine Food Sources

Beets, spinach, quinoa, wheat bran and shellfish contain betaine. Dietary intake varies widely, but research doses of 2.5 grams per day are higher than most diets provide.

6. Who Might Try Betaine

Strength and power athletes looking for small performance improvements, or those interested in homocysteine support, may consider betaine. Anyone with high cholesterol should discuss it with a doctor.

7. Betaine Dosage and Timing

Most studies use 2.5 grams per day, often split into two doses with meals. Betaine can be taken daily, not just on training days. It's commonly included in pre-workout formulas, so check labels to avoid doubling up.

Some people experience digestive upset or a fishy body odor at higher doses.

8. Betaine HCl vs Betaine Anhydrous

Betaine HCl is used as a digestive aid to increase stomach acid and is different from betaine anhydrous, which is used for performance. Don't substitute one for the other.

9. Our Recommendation

Try 2.5 grams daily for at least a few weeks if you want to test betaine's performance effects.

10. Betaine and Body Composition

A few studies have reported small improvements in lean mass and reductions in body fat with betaine supplementation alongside resistance training. These findings are interesting but not consistent across all studies. Betaine should be seen as a possible small extra rather than a reliable body composition tool.

11. Final Tip

If you already use a pre-workout, check whether it includes betaine at 2.5 grams. If it does, you don't need a separate betaine supplement. Track your training performance to see whether it makes a noticeable difference.