Cristian,Welcome to HealingWell. Purchasing a supplement manufactured by a reliable supplier is very important. As you choose the best magnesium supplement for your needs, take the time to research any brand that seems to be a good fit. Look online for comments and other feedback on the general quality of the supplements, as well as how consumers believe they compare with similar products on the market. Taking the time to research your options can help you avoid wasting time and money on inferior products, and possibly lead you to a magnesium supplement that you would never have heard of otherwise.
If you have a pharmacy you use regularly you may faind your pharmacist is a good resource.
Good Luck,
Kitt