Pyridoxal-5-phosphate, sometimes called P-5-P or PLP, is the active form of vitamin B6 (pyridoxine). Most supplements provide the pyridoxine form of B6, although some provide pyridoxal-5-phosphate, or a combination of both. Taken at recommended doses, both forms appear to be relatively safe and have similar bioavailability for most people. Although pyridoxal-5-phosphate is sometimes promoted as more beneficial for people with diabetes, there do not appear to be any studies in people to support this. For more details, see the "What to Consider When Buying" section of the B Vitamin Supplements Review >>
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