This is vitamin B6 in its already-active **pyridoxal-5'-phosphate** (P5P) form — the coenzyme your body normally has to build before it can use B6 at all, so it goes straight to work supporting energy metabolism and mood. Skipping that conversion step is the reason to choose this form if you convert ordinary B6 poorly: the P5P heads directly into making neurotransmitters like serotonin and dopamine.

The 100mg on the label is the weight of the P5P, which supplies about 60mg of actual vitamin B6 — inside the 25–100mg range used in research, so one tablet covers your full daily need.

Worth knowing: B6 is the only B vitamin with a real toxicity ceiling. Chronic intake above the 100mg daily upper limit can cause reversible nerve damage, and at ~60mg you're already using a good share of that headroom — so don't stack this with a B-complex or energy drink that adds more.