SUPPLEMENTS·NOW FOODS
NOW Magnesium Citrate 200mg
4.6 · 17,000 shopper ratings
Editor score7.7/10
Best for: Budget magnesium buyers
Lowest price we found
$19.99
At Amazon (as of – Details)
Buy at Amazon · $19.99 ↗Review updated 2026-07-03
Active
Magnesium citrate 200mg
Form
Tablet
Count
100-250 tablets
The budget workhorse — citrate from a GMP-certified 50-year brand, at the lowest cost per mg in our lineup.
NOW's version is GMP-certified with in-house lab testing and costs less than glycinate products in our lineup.
Price & where to buy
Prices checked 2026-10-11amazon
AmazonBest price✓ Fast delivery · easy returns
Magnesium citrate 200mg
$19.99
(as of – Details)
Walmart
Walmart
Availability + price vary by store
Price varies
Not price-checked
Target
Target
Availability + price vary by store
Price varies
Not price-checked
Prices shown were last checked on 2026-10-11 and can change at any time — the price on the retailer's site at checkout is the one that applies. Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product. As an Amazon Associate and affiliate we may earn a commission on purchases made through these links, at no extra cost to you.
How our prices work
We show the price at our recommended retailer as at our last check of that offer (2026-10-11) and the manufacturer's list price for comparison. Amazon prices come from Amazon's own product data service and are refreshed twice a day; each one shows the date and time Amazon gave it, and one older than 24 hours is replaced by “Check price”. Other retailers' prices are checked by hand and show the date of that check. Retail prices move constantly, so the price on the retailer's own page at checkout is the one that applies. More on Amazon prices
Should you buy it?
What we like
- Lowest cost per mg of any credible form
- GMP-certified 50-year manufacturer
What to know before buying
- Plain tablets, large-ish
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At a glance
ActiveMagnesium citrate 200mg
FormTablet
Count100-250 tablets
CertificationGMP, in-house tested
Best forCheapest credible magnesium
Compare with alternatives
Quick verdicts for the supplements most often considered alongside the NOW Magnesium Citrate 200mg.
VS·HEAD-TO-HEAD
NOW Magnesium Citrate 200mg vs Doctor's Best High Absorption Magnesium Glycinate 200mg (240ct)
The highest-rated magnesium on Amazon — 240 tablets from Doctor's Best.
→ Value-focused buyers, athletes
VS·HEAD-TO-HEAD
NOW Magnesium Citrate 200mg vs Life Extension Neuro-Mag Magnesium L-Threonate
Life Extension's three-capsule magnesium L-threonate, with published certificates of analysis.
→ Magtein buyers, published-CoA shoppers
VS·HEAD-TO-HEAD
NOW Magnesium Citrate 200mg vs Nested Naturals LUNA Sleep Aid
The kitchen-sink botanical — melatonin, valerian, chamomile, L-theanine and magnesium in one capsule, with a melatonin-free version for purists.
→ One-capsule botanical stacks, melatonin-free option
Decision support · what no other comparison site has
Take the quiz · 60 secNot sure which one is right for you?
Our 60-second sleep score quiz asks 8 questions and recommends the right sleep gear for your goals. Free, no signup.
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Thorne
Thorne Magnesium Bisglycinate Powder (60 servings)
8.7/10$52.00(Amazon price as of – Details)
Thorne
Thorne Glycine (250 capsules, 1 g per serving)
8.5/10$31.00(Amazon price as of – Details)
NOW Foods
NOW Foods L-Theanine 200mg (120ct)
8.4/10$15.78(Amazon price as of – Details)
Life Extension
Life Extension Melatonin 6 Hour Timed Release 300 mcg (100ct)
8.4/10$9.00(Amazon price as of – Details)
Frequently asked questions
Citrate vs glycinate?
See /natural-sleep-remedies for what the trial evidence actually shows.
Will it upset my stomach?
We don't publish dosing guidance — ask a pharmacist or your doctor.
Is NOW a trustworthy brand?
One of the industry's oldest GMP manufacturers with in-house labs — the standard answer for budget-tier trust.
How much for sleep?
We don't publish dosing guidance — ask a pharmacist or your doctor.
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