OstroVit - Histidine is an amino acid...
OstroVit - Magnesium Citrate + B6 food supplement contains magnesium citrate tablets supplemented with vitamin B6.
OstroVit - Triple Magnesium + B6 P-5-P contains 3 easily digestible forms of magnesium: carbonate, citrate and lactate, as well as vitamin B6.