The Top 5 Supplements to Fall Asleep Faster

There is good evidence that Magnesium improves sleep latency, with Examine.com rating the evidence as grade B. Magnesium as a supplement is a mineral derived from mineral / chelated, commonly taken as capsule or powder. Studies typically use 200–400mg.

Magnesium is an essential mineral involved in over 300 processes in the body, including the regulation of nerve function, muscle relaxation, and the production of hormones involved in sleep. Glycinate is a form of magnesium bound to the amino acid glycine, which improves absorption and is gentler on the digestive system than other forms such as magnesium oxide. It is available as a capsule or powder and is typically taken in the evening.

There is good evidence that Theanine improves sleep latency, with Examine.com rating the evidence as grade B. Theanine as a supplement is a amino acid derived from tea plant, commonly taken as capsule or powder. Studies typically use 100–200mg.

L-theanine is an amino acid found naturally in green tea leaves. It promotes alpha brain wave activity, which is associated with a calm, focused mental state, without causing drowsiness. It is one of the gentlest options available and is well tolerated by most people. It comes as a capsule or powder and can be taken during the day or before bed.

There is good evidence that Melatonin improves sleep latency, with Examine.com rating the evidence as grade B. Melatonin as a supplement is a hormone derived from synthetic, commonly taken as tablet or gummy. Studies typically use 0.5–5mg.

Melatonin is a hormone the body produces naturally when it gets dark, signalling that it is time to sleep. It plays a central role in regulating the body's internal clock that governs sleep and wake cycles. As a supplement it is typically produced synthetically and is available in a range of doses. It comes in tablet or gummy form and works best taken 30–60 minutes before bed.

There is good evidence that Ashwagandha improves sleep latency, with Examine.com rating the evidence as grade B. Ashwagandha as a supplement is a herb derived from plant root, commonly taken as capsule or powder. Studies typically use 300–600mg.

Ashwagandha is a root herb that has been used in traditional Indian medicine for thousands of years. It reduces the amount of cortisol — the hormone the body releases under pressure — resulting in a calmer stress response. Most people notice a difference after two to four weeks of regular use. It is usually taken as a capsule once or twice a day.

There is some evidence that Vitamin D improves sleep latency, with Examine.com rating the evidence as grade C. Vitamin D as a supplement is a vitamin derived from synthetic (lanolin or lichen), commonly taken as softgel or tablet or drops. Studies typically use 1,000–4,000 IU.

Vitamin D is a fat-soluble vitamin the body produces when skin is exposed to sunlight. Most people in northern climates or who spend limited time outdoors have low levels, which affects immune function, bone strength, and mood. Research shows strong evidence across a wide range of outcomes — including reduced infection risk, improved bone mineral density, and reduced symptoms of depression and anxiety. It is best taken as a softgel or drop with a meal containing fat, which is needed for absorption.