A complete safety, timing, and dosage guide for combining Vitamin B6 (Pyridoxine) with Betaine (TMG) — including how the two supplements interact, the best time of day to take each, and which populations should be careful.
Yes, you can take Vitamin B6 (Pyridoxine) and Betaine (TMG) together safely — no significant interaction has been reported.
Vitamin B6 and Betaine together are safe and well-tolerated for most adults. Vitamin B6 (pyridoxine) supports amino acid metabolism and neurotransmitter production, while betaine (TMG) acts as a methyl donor. No negative interactions have been identified, and they may even offer complementary support for homocysteine metabolism.
Vitamin B6 is a water-soluble vitamin that is absorbed in the proximal small intestine and converted to pyridoxal 5'-phosphate (PLP), a coenzyme for over 100 enzymatic reactions, including amino acid metabolism and neurotransmitter synthesis. Betaine (trimethylglycine) is a methyl donor derived from beets, and it is absorbed via amino acid transporters in the gut. Betaine participates in the methionine cycle by donating a methyl group to homocysteine, converting it back to methionine. Vitamin B6, as PLP, is a cofactor for cystathionine beta-synthase in the transsulfuration pathway, which also metabolizes homocysteine. Since they support different pathways and do not compete for absorption or enzymes, no mechanistic basis exists for an adverse interaction.
To get the most benefit, take vitamin B6 and betaine (TMG) together with your largest meal of the day. A typical dose is 10–50 mg of B6 and 500–1500 mg of betaine (TMG) daily, adjusted to your health goals. There is no need to space them apart—they do not interfere. If you miss a dose, just take it with your next meal; do not double up. For homocysteine support, pair them with folate and vitamin B12 to maximize the methylation pathway.
The form of vitamin B6 matters: pyridoxine HCl requires hepatic conversion to PLP, while pyridoxal 5'-phosphate (P5P) is already active and may be better absorbed in some individuals. Betaine is available as anhydrous betaine (TMG) for methyl-donation support and as betaine HCl for stomach acid support; the HCl form can irritate the stomach if taken without food. For the purpose of taking B6 and TMG together, any standard form is acceptable, but avoid betaine HCl if you have frequent heartburn or gastritis.
This combination commonly appears in homocysteine-support formulas alongside vitamin B12 and folate, as well as in B-complex and liver-detox supplements. They are also frequently bundled in methylation-support supplements.
Yes, I can take them together. They do not compete for absorption and no interaction has been reported, so I simply take them with a meal.
Yes, it is safe for me to combine them every day at standard doses. I should stick to 10–50 mg of B6 and 500–1500 mg of betaine for long-term use.
I don't need to wait at all—I can take both at the same time.
No, they do not compete. Vitamin B6 is absorbed passively in the small intestine while betaine uses amino acid transporters, so they both absorb without interference.
Most people can take them, but I would check with my doctor if I have kidney disease, a history of neuropathy, or if I'm taking levodopa or phenobarbital, since B6 can affect these.
I take both with food to reduce any chance of stomach upset, especially if I use betaine HCl. Betaine anhydrous (TMG) can also be taken on an empty stomach.
Reviewed by Caroline M. on April 11, 2026 for accuracy against the sources listed above. This page is educational and is not a substitute for professional medical advice.
The matrix has 86 supplements and 7310 pairwise interactions. Click any cell to see the full breakdown.