A map, not a protocol

Supplements

This is a map of the evidence, not a recommendation, and not a claim about any specific product.

Supplements for sleep

The brief

Most people don't need them. Supplements are for people whose schedules do not allow them to follow these protocols, or for someone who has already followed the protocols and wants to polish their sleep quality more.

If your sleep is off, the fix is almost always behavioral: quantity, quality, regularity, and timing, plus getting light and temperature right. Work through Sleep hygiene first.

If the groundwork is genuinely in place and you are fine-tuning, a few compounds have reasonable evidence behind them. What follows is a map of that evidence, not a recommendation. Forms and doses vary widely between brands, which is exactly why label-reading matters more than brand names.

01Magnesium
02Theanine
03Inositol
04Apigenin
05Phosphatidylserine
06Glycine

Magnesium

Relevant mainly because deficiency is common, and deficiency itself disrupts sleep. The form matters more than the headline: bisglycinate and threonate are the better-absorbed, gentler options. Cheaper oxide forms are mostly filler by elemental weight. Read the elemental magnesium number, not the compound weight. A 500mg magnesium label can be a fraction of that in usable magnesium.

Theanine

Can help you relax and fall asleep. For people who experience vivid dreams that disturb their sleep, theanine can make that worse.

Inositol

Particularly useful if you wake during the night and struggle to fall back asleep. It can reduce the time needed to return to sleep.

Apigenin

Derived from chamomile. It comes up for reducing anxiety and helping the transition into sleep.

Phosphatidylserine

Studied for blunting the cortisol response, which is why it comes up for people whose minds race at night.

Glycine

An amino acid with some of the more consistent controlled-trial support for sleep quality. Taken close to bedtime in the studies, often at 1.5-2g.

What matters more than the list

01Fix behavior first. A supplement layered onto broken sleep habits is treating a symptom.
02One thing at a time. Start with a single compound long enough to judge it before stacking. If you cannot tell what is doing what, you have learned nothing.
03Doses and forms in the research are not what is always in the bottle. Underdosing is the norm in this category, not the exception.
04Talk to a doctor before starting anything, especially if you take other medication.

This is general educational information, not medical advice, and not a claim about any specific product. Talk to a healthcare professional about your own situation.

Source: Huberman Lab newsletters and articles.