The absorption of magnesium is a significant factor in selecting a particular brand.  Liquid magnesium is more absorbable and bioavailable than magnesium citrate. However, I have included a link to the pill form since it may be more cost-effective.   Magnesium is a critical ingredient that supports the body’s epigenetics.  The following link provides more information on how magnesium contributes to methylation and the epigenetic process. https://www.wholisticmatters.com/Articles/2018/Food,-Nutrition-and-the-Methylation-Balancing-Act

I have taken this supplement with others that work on epigenetics and especially the Sirtuins to ensure maximum effect is enabled (such as NMN, NAD, Pterostilbene,  Telomerase activators, and others).  Magnesium has significant anti-aging properties.