Women may find vitamin B6 particularly beneficial, since it can help to relieve the symptoms of pre-menstrual tension, is required in higher amounts by women taking the contraceptive pill & helps to alleviate morning sickness during pregnancy. The range of B vitamins work most effectively when taken together. Without vitamin B6 the body cannot properly absorb vitamin B12, which may lead to tiredness, irritability & anaemia, & in order to prevent deficiencies in other B vitamins, B6 should be taken in equal amounts with B1 & B2.