ZMA stands for zinc, magnesium, and aspartate. ZMA is an easy way to supplement these two minerals and vitamin B6.
ZMA is most often used for
ZMA is a supplement formulation composed of zinc monomethionine aspartate, magnesium aspartate, and vitamin B6 that is claimed to increase testosterone levels. Supplementation with ZMA was first tested in humans by the supplement’s manufacturer, which found that ZMA raised testosterone levels and increased muscle strength and power in athletes. However, follow-up studies by independent groups have failed to replicate those initial results.
It is possible that ZMA can cause weird dreams, and the anecdotes support this; however, since this has not been directly investigated the best 'proof' that can be given is weak.
ZMA is a proprietary blend of Zinc bound to monomethionine, Magnesium bound to aspartate, and the vitamin B6 (Pyridoxine). It is sometimes reported to give users 'weird, vivid dreams'.
This claim has not been investigated much, but a pilot study suggests that a dose of 250mg pyridoxine can alter dream perception in college aged men, through a hypothesized increased conversion of tryptophan to serotonin. This dose of B6, however, is much higher than that occurring in ZMA products; which tends to range in the 10-50mg range and usually at the lower end.
One other study has reported synergism between B6 and Magnesium in regards to anxiety reduction, when the subjects were women experiencing PMS; it is theoretically possible that the ZMA formulation enhances the actions of pyridoxine allowing the previous research's results to be relevant.