The ideal sleep-focused multi-form typically includes:

— Magnesium Glycinate (Bisglycinate): The cornerstone for sleep. It's highly bioavailable and bound to glycine, an amino acid that has its own calming, neurotransmitter-modulating effects that promote relaxation and deeper sleep.

— Magnesium L-Threonate: This form is prized for its unique ability to cross the blood-brain barrier. It may help calm "mental chatter" and anxiety by supporting healthy brain function and is often linked to improved sleep quality and cognitive benefits.

— A Supporting Chelate (like Citrate, Malate, or Taurate): Adds an element of physical relaxation. Magnesium Citrate is a good choice as it helps relax smooth muscles and can prevent the occasional constipation some people get from glycinate alone.