Supplements for Stress and Sleep: A Practical Guide

Magnesium first

Magnesium is usually the sensible starting point for stress and sleep support. It contributes to normal muscle relaxation and nervous system function, and many people take it in the evening as part of a wind-down routine. NutriZen Magnesium Complex combines four forms, including bisglycinate, which is the form most often chosen for evening use because it's gentle on the stomach and less likely to cause the mild laxative effect some other forms have.

Adaptogens for ongoing stress

If stress feels ongoing rather than occasional, adaptogens such as ashwagandha, rhodiola and reishi are traditionally used to help the body cope with sustained stress, each with a slightly different traditional focus: ashwagandha for calm and sleep, rhodiola for mental fatigue under pressure, and reishi for general resilience. NutriZen Adaptogen+ Complex combines ashwagandha, rhodiola, reishi and Siberian ginseng in one formula. Unlike magnesium, adaptogens are typically taken daily for several weeks before people notice a difference, so they're a longer-term addition rather than an occasional one reached for on a bad night. Our full guide to adaptogens explained covers each botanical in more depth.

Combining them

Magnesium and adaptogens work in different ways and are commonly taken together — magnesium for the physical relaxation side, adaptogens for the body's broader stress response over time. There's no need to choose one over the other; many people start with magnesium in the evening and add an adaptogen formula earlier in the day, so the adaptogen supports daytime resilience while the magnesium supports the wind-down at night.

Sleep habits that matter

No supplement replaces the basics: a consistent bedtime and wake time (even on weekends), reduced screen time in the hour before bed, a cool dark room, and limiting caffeine from the early afternoon onward, since it can affect sleep quality even hours later. Alcohol is worth a mention too — it can make falling asleep feel easier while actually reducing the quality of sleep later in the night. Supplements work best alongside these habits, not instead of them; a magnesium capsule taken at midnight after three coffees and a late scroll session is unlikely to do much on its own.

Safety

Speak to a healthcare professional before using adaptogens if you are pregnant or breastfeeding, have a thyroid condition, or take medication for blood pressure, sleep or blood sugar, since some adaptogens can interact with these. Magnesium is broadly safe for daily use but should be checked with your doctor if you have kidney disease or take prescription medication, since the kidneys are responsible for clearing excess magnesium from the body.

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