Stress & Mood

A full 600 mg daily dose of organic KSM-66 ashwagandha in one capsule for about $0.25-$0.28 a day. Strong value; not for pregnancy or thyroid conditions.

A simple, well-dosed 200 mg Suntheanine softgel for calm focus and wind-down, at about $0.33 a day. Contains gelatin and coconut.

A long-running Amazon favorite: 200 mg of fully chelated magnesium per serving that is easy on the gut, but the tablets are large and the full label dose exceeds the UL.

Amazon's No. 1 magnesium: 120 mg of magnesium glycinate per capsule in a minimal, allergen-free formula that is gentle on the gut but pricey per milligram.

NSF-certified gummy with a sensible 3 mg melatonin dose, but its L-theanine (50 mg) and botanicals are well below the amounts used in research.

Dermatologist-favorite hair supplement, NSF Certified for Sport and now biotin-free and vegan; backed by company-funded trials but $88 a month and built on proprietary blends.

TikTok's viral bedtime hot cocoa: a sensible 3 mg melatonin plus 300 mg L-theanine in a 15-calorie drink, but at roughly $1.80-$2.20 a serving you pay for the ritual.

The TikTok-famous 'Sleepy Girl Mocktail' magnesium: tasty and third-party tested, but mostly laxative magnesium citrate at about $1.47 a serving.

A pricey 2 oz nootropic shot with 55 mg caffeine and 10+ adaptogens, but its actives sit in an undisclosed 11.7 g blend and it costs about $5 a shot.