Nutrients people commonly take to support sleep and relaxation. We make no medical claims — each is ranked by real cost per dose, with NIH-sourced facts on every nutrient page. Best value right now: Magnesium from $0.04/serving.
Prices checked Aug 25, 2026
The nutrients people commonly associate with sleep, each shown at its cheapest current cost per dose (per gram for powders). Ranked lowest cost first; no paid placement.
| # | Nutrient | Cheapest pick | Dose basis | Price | Cost / dose | Refs |
|---|---|---|---|---|---|---|
| 1 | Magnesium | Pure Original Ingredients L-Tryptophan (365… | per serving | $15.99 | $0.04/serving | facts · NIH |
| 2 | L-tryptophan | Pure Original Ingredients L-Tryptophan (365… | per serving | $15.99 | $0.04/serving | facts |
| 3 | Glycine | Now Supplements,Boron 3 mg (Bororganic… | per serving | $24.00 | $0.05/serving | facts |
| 4 | Magnesium Glycinate | NatureBell Valerian Root for Sleep | per serving | $14.95 | $0.05/serving | facts |
| 5 | Melatonin | NatureBell Valerian Root for Sleep | per serving | $14.95 | $0.05/serving | facts · NIH |
| 6 | Valerian root | NatureBell Valerian Root for Sleep | per serving | $14.95 | $0.05/serving | facts |
| 7 | Lemon Balm | NatureBell Valerian Root for Sleep | per serving | $14.95 | $0.05/serving | facts |
| 8 | Tart cherry | Carlyle Tart Cherry Extract Capsules | 200 Count | per serving | $9.99 | $0.05/serving | facts |
| 9 | L-Theanine | NatureBell L-Tryptophan Complex - 300 Capsules… | per serving | $19.99 | $0.07/serving | facts |
| 10 | GABA | NOW GABA 500 mg,200 Veg Capsules | per serving | $15.07 | $0.08/serving | facts |
Ranked by real cost per dose (per gram for powders), not sticker price. We make no health claims — see each linked nutrient page for NIH-sourced facts, or read our methodology.
This page gathers the nutrients people commonly associate with sleep and ranks each one by cost per dose— the product’s current price divided by its servings per container, then normalized to one daily dose (or per gram for powders so a 20 g and a 25 g serving compare fairly). The table shows the single cheapest pick we currently track for each nutrient, sorted lowest cost first. Nothing here is paid placement, and a nutrient with no active deals simply drops off the list.
If you are assembling a stack for sleep, cost per dose is the figure that tells you what each option actually costs to take day after day — a smaller bottle with a lower sticker price can cost more per serving than a larger one. Use it to compare like-for-like and avoid overpaying; it is a price-comparison signal, not a measure of quality or suitability.
Detailed nutrient facts — intake ranges, food sources, upper limits and safety — live on each linked nutrient hub, sourced from the NIH Office of Dietary Supplements. For the full ranking rules see our methodology and editorial standards.
Commonly: Magnesium Glycinate, Magnesium, Melatonin, L-Theanine, Glycine, Valerian root, Tart cherry, GABA, L-tryptophan, Lemon Balm. We make no medical claims — each is ranked here by real cost per dose, with NIH-sourced facts on its nutrient page. Not medical advice.
By cost per dose, Pure Original Ingredients L-Tryptophan (365 Capsules) No Magnesium Or… (Magnesium) at $0.04/serving is the cheapest per-dose option among the sleep nutrients we track as of August 2026.
We link primary sources and paraphrase their findings — never copy their text, tables, or images. Cost-per-dose figures are our own first-party catalog data.