Cross-referencing clinical data
A pairing appears on this page only when a trial gave both ingredients together and measured the result. Dimethylglycine has none that clears that bar.
Stitching two separate single-ingredient studies into a pairing is the one thing this engine will not do. When a study of the combination itself holds up at source, it lands here with its citation.
No invented synergy. Where actives were studied on their own rather than together, the record shows each on its own evidence, never a combined effect no trial measured.
Research strength. Research strength says how much work stands behind the combination. It is never a product score.
Independent record. Every finding is cited to a named trial, dated, and never written by the brand.
20 pairings are live across the library today. Checked 20 July 2026.
No study gave these as a pair, so they are not in the card above. But the reason they belong together is settled biochemistry, not a guess, so it is worth knowing.
Dimethylglycine is what betaine becomes after betaine-homocysteine methyltransferase hands one methyl group to homocysteine. Supplementing betaine raises circulating dimethylglycine as a direct consequence, which is why dimethylglycine shows up as a marker in betaine trials. The two are one reaction apart, not independent ingredients.
Choline is oxidised to betaine in liver and kidney mitochondria, and betaine is then demethylated to dimethylglycine. So choline intake sits upstream of dimethylglycine by two steps. Anyone loading choline is already generating dimethylglycine endogenously.
Dimethylglycine is demethylated to sarcosine, then sarcosine to glycine, by two flavin-dependent mitochondrial dehydrogenases. Glycine is the terminal product of that route. This is settled pathway biochemistry rather than a supplement effect.
Dimethylglycine dehydrogenase and sarcosine dehydrogenase are both flavoproteins that need FAD, which the body builds from riboflavin. Poor riboflavin status slows that clearance step, and raised plasma dimethylglycine is a recognised biochemical signature of it. This is the most direct nutrient dependency dimethylglycine has.
The methyl groups stripped from dimethylglycine and sarcosine are handed to tetrahydrofolate, generating 5,10-methylene-THF. Folate is therefore the acceptor that lets the demethylation run. Without adequate folate the one-carbon units have nowhere to go.
The folate-dependent and betaine-dependent routes for remethylating homocysteine run in parallel, and dimethylglycine is the exhaust of the betaine route. Methylfolate supports the other arm. Homocysteine is a biochemical marker, and moving a marker is not the same as changing a clinical outcome.
Methionine synthase needs B12 to run the folate arm of homocysteine remethylation. When that arm is limited the betaine arm carries more of the load, and dimethylglycine output rises accordingly. Plasma dimethylglycine consequently reads as a metabolic marker of how the two arms are sharing the work.
Methionine is the product when homocysteine takes betaine's methyl group and dimethylglycine is left behind. High methionine intake raises homocysteine flux, which pulls harder on the betaine route and increases dimethylglycine formation. The three sit in one loop.
B6 drives the transsulfuration branch that disposes of homocysteine rather than recycling it. That branch competes with the betaine route that produces dimethylglycine, so B6 status changes how much flux the dimethylglycine-producing arm sees. It is a shared node, not a direct reaction partner.
Endogenous creatine synthesis consumes a large share of the body's labile methyl groups through guanidinoacetate methyltransferase. Supplemental creatine reduces that demand and eases pressure on the methyl pool that betaine and dimethylglycine sit in. The interaction is on methyl-group supply rather than on either compound's own action.
Nothing specific on file for Dimethylglycine. Match the label to the daily amount above, and tell your doctor what you take.
Not medical advice. Show the label to your pharmacist.These are the studies our verdict leans on, chosen from the 7 we read for Dimethylglycine. The full linked list is below.
Read this carefully. These are 40 voluntary, unverified reactions reported to the FDA (openFDA). The number mostly reflects how popular Dimethylglycine is, not how risky it is. A report is not proof Dimethylglycine caused anything. It is a signal of what to watch for, nothing more.
Source: openFDA adverse-event reports. Voluntary reporting, not an incidence rate.
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This information is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider before starting any supplement regimen.