Solaray Magnesium Citrate

Generally yes. Magnesium citrate is more soluble and bioavailable than oxide, which is why it's often recommended despite delivering less elemental magnesium per gram. Solaray is one of the long-standing names selling it in capsule form.

It can. Citrate draws water into the intestines, so it has a mild laxative effect, particularly at higher doses. People who only want the muscle and nerve benefits without that effect often switch to magnesium glycinate instead.

Solaray was founded in Utah in the early 1970s and is now part of Nutraceutical Corporation. It's one of the older American supplement brands, with decades of presence in health food stores.

Natural Calm, a popular magnesium citrate powder you dissolve in water, is the main competitor and is easier to dose flexibly or split between morning and night. Solaray's capsules are more convenient for travel and consistent dosing, though both deliver the same citrate form.