Magneral is a magnesium-containing product intended to support magnesium intake. What matters is the elemental magnesium amount listed on the label, the magnesium form (oxide/citrate, etc.), and the recommended use. In practice, magnesium may be used as support when intake is low or when symptoms like cramps are present and a clinician deems it appropriate. The same cautions apply to any brand: people with kidney disease should avoid high doses; diarrhea or cramps suggest the dose or form may not be tolerated; and timing separation may be needed with certain medicines (notably some antibiotics or thyroid medications). More than the brand, the right dose and tolerability for your situation drive success.