Nobi Nutrition's Magnesium Complex utilizes a common strategy of blending forms: Magnesium Citrate for better absorption and physiological effects, and Magnesium Oxide, which is cheaper to source and has a high elemental magnesium content by weight but is poorly absorbed. This means that while consumers get a high total dose, a significant portion of it may not be absorbed for systemic benefits. For daily supplementation targeting stress, energy, or mood, a product focusing on more bioavailable forms like glycinate or pure citrate might be more effective, especially considering the higher price point for this blend. However, the numerous positive reviews suggest it works well for many, likely due to the citrate content and possibly its laxative effect for some.