Natural factor supplements are very high quality every time, non gmo, ect...and lab tested by ISURA , love how the company thinks about the quality of their products for the real health of their customers

I take Magnesium daily to aid in the reduction of migraines. Over the years I've used many different brands. Natural Factors exceeds them all. The size of the pill is smaller than most and is smooth and easy to follow. In the short time I've been using it I feel that it's been more effective than other brands. If you suffer from migraines, I'd highly recommend you try Natural Factors Magnesium.