ZMA zinc, magnesium and vitamin B6 capsules are a popular dietary supplement, generally used to promote muscle recovery, boost testosterone levels and improve sleep quality. They combine zinc, magnesium and vitamin B6, with added ashwagandha and astragin to enhance their benefits.90 capsules: 30 portions Zinc, magnesium and vitamin B6 are popular dietary supplements, generally used to promote muscle recovery, boost testosterone levels and improve sleep quality. It combines zinc, magnesium and vitamin B6, with added ashwagandha and astragin to enhance its benefits: Our advanced formula goes beyond conventional ZMA supplements by using superior forms of highly bioavailable zinc and magnesium for optimal absorption and effectiveness. We've also added ashwagandha , an adaptogenic plant known to help reduce stress, improve sleep quality and promote recovery and hormonal balance.