This 100mg vitamin B6 tablet lands at the top of the supplemental range, giving you a full dose for energy metabolism, mood, and making serotonin and dopamine. **Vitamin B6** here is pyridoxine hydrochloride, the standard form your body converts into the active P5P it actually uses — it works for most people, though some prefer taking P5P directly.

The thing to know is that 100mg sits right at the tolerable upper limit for B6, the one B vitamin with a real ceiling. Chronic intake at high doses has been linked to reversible tingling or numbness in the hands and feet, so this is fine short-term but the maximum you'd want for daily long-term use.

If you already take a multivitamin or B-complex, factor in the B6 they add — stacking them on top of this tablet pushes your total past that ceiling. On its own, one tablet daily covers your B6.