Sleep · computed from the label

ZMA

by Various (NOW, Optimum) · $19.99 / 30 servings ($0.67/serving)
B
Formula
Mostly dosed
C
Deal
Marked up

"Zinc, magnesium & B6 for recovery and sleep." A classic combo.

2 of 3 recognized ingredients hit their clinically studied dose.

Ingredients vs the studied dose

IngredientLabel doseStatus
Zinc
30mg zinc — the studied dose
30mg✓ OK
Magnesium Glycinate
450mg magnesium — above the 400mg sleep dose
450mg✓ OK
Vitamin B6 (Pyridoxine HCl)
10.5mg B6 — below the 25mg functional dose
10.5mg⚠ LOW

Make it yourself — per serving

Ingredient (bulk)Cost/serving
Zinc$0.01
Magnesium Glycinate$0.11
Vitamin B6 (Pyridoxine HCl)$0.01
Your DIY cost$0.12
Various (NOW, Optimum) charges ($19.99 / 30 servings)$0.67

That's a 5.3× markup over building the same actives from bulk powders.

The verdict

An honest, cheap classic — the zinc and magnesium are dosed properly, only the B6 runs light. ZMA won't work miracles (the testosterone claims are overblown unless you're deficient), but as a sleep/recovery mineral stack it's legit and the raw minerals are pennies in bulk.
Open the interactive card → Decode your own supplement

Head-to-head

ZMA vs Sleep Drink Mix

More Sleep grades

Sleep Gummies — BNew Mood — CDream Powder — CSleep Drink Mix — A+

Educational only — not medical advice. Grades and clinical doses are computed from public labels against sourced research (citations on the main site); prices last verified 2026-07-21. Expensive Powder has no sponsors; bulk links may earn an affiliate commission, which never affects a grade. Talk to a clinician before starting any supplement.