b-complex
3 interactions related to b-complex
vitamin b6 + vitamin b12
Vitamin B6 (as pyridoxal 5'-phosphate) and vitamin B12 (as methylcobalamin) act as complementary coenzymes in one-carbon metabolism: B12 helps remethylate homocysteine back to methionine, while B6 routes excess homocysteine down the transsulfuration pathway to cysteine. Together they keep blood homocysteine within a healthier range than either nutrient does alone.
vitamin b6 + folate
Vitamin B6 and folate work in tandem within one-carbon metabolism: folate (as 5-MTHF) donates a methyl group to remethylate homocysteine, while B6 (as PLP) is the cofactor for serine hydroxymethyltransferase and cystathionine beta-synthase, supporting both the folate cycle and the transsulfuration route that disposes of excess homocysteine.
black tea + thiamine
Black tea contains antithiamine factors - polyphenols such as tannins and chlorogenic acid - that oxidise thiamine (vitamin B1) into thiochrome-negative, biologically inactive forms in the gut. High habitual tea consumption has been linked to reduced thiamine status, especially in populations with marginal B1 intake.