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: Melatonin from $0.02/serving.
Prices checked Oct 10, 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 | Melatonin | Piping Rock Melatonin 3mg | 250 Tablets | Adult… | per serving | $5.49 | $0.02/serving | facts · NIH |
| 2 | Magnesium | Magnesium Oxide 400mg, 500 Capsules | Elemental… | per serving | $15.19 | $0.03/serving | facts · NIH |
| 3 | Magnesium Glycinate | NatureBell Valerian Root for Sleep | per serving | $9.99 | $0.03/serving | facts |
| 4 | Valerian root | NatureBell Valerian Root for Sleep | per serving | $9.99 | $0.03/serving | facts |
| 5 | Lemon Balm | NatureBell Valerian Root for Sleep | per serving | $9.99 | $0.03/serving | facts |
| 6 | Glycine | Now Supplements,Boron 3 mg… | per serving | $22.07 | $0.04/serving | facts |
| 7 | L-Theanine | Extra Strength L-Theanine Supplement 400mg | per serving | $18.99 | $0.05/serving | facts |
| 8 | Tart cherry | FITO MEDIC'S Lab Tart Cherry Extract Supplement | per serving | $9.99 | $0.05/serving | facts |
| 9 | GABA | GABA 1,000mg, Calm, Relaxation + Sleep Support… | per serving | $19.95 | $0.07/serving | facts |
| 10 | L-tryptophan | Deal Supplement 5-HTP 200mg Per Serving | per serving | $15.99 | $0.07/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, Piping Rock Melatonin 3mg | 250 Tablets | Adult Support Supplement (Melatonin) at $0.02/serving is the cheapest per-dose option among the sleep nutrients we track as of October 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.