The SHBG Problem

Sex Hormone Binding Globulin (SHBG) is a protein that latches onto testosterone molecules, rendering them inert. About 60% of your T involves this binding. Magnesium binds to SHBG instead, forcing it to release the testosterone back into circulation.

Result: Higher Free Testosterone without necessarily manufacturing more Total Testosterone. It's an efficiency upgrade.

For Athletes

Magnesium is vital for ATP production (energy). A deficiency leads to cramps, fatigue, and poor recovery.

For Sleepers

Magnesium activates the parasympathetic nervous system, preparing the brain for deep sleep. (See our Sleep Data).

The ZMA Synergy

Zinc and Magnesium work better together. Testosil combines them in the clinically researched ratio.

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