The Grocery Lady
✨COSTCO✨ What’s NEW this week +! MARCH In-store Savings!! || New Arrivals at Costco - March 2026!!
“Magnesium will just make you feel good, I do declare. $12.99 because you're saving $3.50.”
Nature Made Magnesium 400mg Liquid Softgel 180 CT
$16.49Real in-store prices from 600+ Costco locations. Download on the App Store to track prices, scan shelf tags, and get alerts.
In-store pricing snapshot
Based on recent checks across 611 Costco warehouses reporting.
* Prices shown are for Costco members only.
Nature Made Extra Strength Magnesium 400mg dietary supplement provides essential magnesium support in an easy-to-swallow liquid softgel format. This pharmacist-recommended vitamin and supplement brand delivers 95% of the daily value of magnesium per softgel to support nerve, heart, and bone health, as well as promote muscle relaxation.
Each softgel contains magnesium in the form of magnesium oxide, a readily absorbed mineral supplement. The liquid softgel formulation is designed for easier swallowing compared to traditional tablets. This 180-count bottle provides a six-month supply when taken as directed.
The product is made with quality standards including no synthetic dyes, no artificial flavors, no preservatives, and is gluten-free. Colors are derived from natural sources. Adults should take one softgel daily with water and a meal.
Supplement Facts per softgel: 10 calories, 0.5g total fat (1% DV), 0.5g saturated fat (3% DV), 400mg magnesium as magnesium oxide (95% DV). Other Ingredients: Vegetable Oil (Soybean Oil and/or Medium Chain Triglycerides Oil), Gelatin, Glycerin, Lecithin, Colors Added (Including Carmine). Do not exceed one softgel daily or take with other magnesium-containing products unless recommended by a physician. Product may cause gastrointestinal disturbance including diarrhea.
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The Grocery Lady
✨COSTCO✨ What’s NEW this week +! MARCH In-store Savings!! || New Arrivals at Costco - March 2026!!
“Magnesium will just make you feel good, I do declare. $12.99 because you're saving $3.50.”
Recent price trends and regional spread across Costco warehouses.
Aggregate price checks across warehouses
Lowest
$12.99
Highest
$16.79
Avg change
+$0.00 (+0.0%)
Latest average
$16.49
Regional pricing and availability by warehouse area
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Showing the 5 most recently updated Costco warehouses
| Warehouse | Price | Status | Updated |
|---|---|---|---|
Mt Pleasant#1319→ 3525 Park Avenue Blvd Mount Pleasant, SC 29466-7242 | $16.49 | In Stock | Jul 18, 2026 |
Bonney Lake#1278→ 9801 204th Ave E Bonney Lake, WA 98391-6559 | $16.49 | In Stock | Jul 18, 2026 |
Murray#764→ 5201 S Intermountain Dr Murray, UT 84107-6024 | $16.49 | In Stock | Jul 18, 2026 |
Pewaukee#1101→ 443 Pewaukee Rd Pewaukee, WI 53072-5886 | $16.49 | In Stock | Jul 18, 2026 |
Fredericksburg#340→ 3102 Plank Rd # 600 Fredericksburg, VA 22407-4900 | $16.49 | In Stock | Jul 18, 2026 |
View All 611 Warehouse Prices Unlock Premium Web pricing, full history, and store comparisons | |||
$9.97
WOMENS APPAREL
$9.97
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$9.97
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$2.97
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WOMENS APPAREL
$649.97
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$12.97
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