What are the differences between magnesium citrate and magnesium carbonate in terms of their effectiveness for treating constipation?

Magnesium citrate is generally more effective than magnesium carbonate for treating constipation. This is because magnesium citrate has higher bioavailability and is better absorbed by the body, leading to quicker relief of constipation symptoms. Magnesium carbonate may take longer to produce a laxative effect and may be less effective for some individuals.