Vitamin B6 belongs to a family of three chemically related, water-soluble compounds that includes pyridoxine , pyridoxal, and pyridoxamine. Supplements that provide the active form of pyridoxine , P-5-P (Pyridoxal-5-Phosphate), are believed to be slightly better absorbed than pyridoxine , however this difference is not a significant reason for choosing this more precise form, as pyridoxine is converted to the active form Pyridoxal-5-Phosphate naturally in the body. Vitamin B6 is involved in more metabolic reactions in the body than any other B vitamin . It should be noted, however, that 25% of women follow a diet that provides them with less than the recommended daily dose of this vitamin and for this reason it is a very important dietary supplement for women as it can be taken during the premenstrual period, contributing to the metabolism of essential fatty acids and maintaining the body's fluid balance (reducing fluid retention). It is now widely accepted that vitamin B6 deficiency can increase plasma homocysteine ​​levels, a factor that has been associated with the occurrence of cardiovascular diseases.