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Costco Members: Magnesium Supplements on Sale $15-$23 through Jan. 19, 2026

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forum threadBruDeal posted Yesterday 11:03 PM

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Item 1 of 6

forum threadBruDeal posted Yesterday 11:03 PM

Costco Members: Magnesium Supplements on Sale $15-$23 through Jan. 19, 2026

Costco Wholesale

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Costco.com offers its members several Magnesium supplements on sale.

Kirkland Signature Calcium Citrate, Magnesium and Zinc Tablets [costco.com], 500 Tablets, $14.49, reg. $16.99
Nature Made Extra Strength Magnesium Softgels [costco.com], 400 mg., 180 Softgels, $16.49, reg. $19.99
Qunol Magnesium Extra Strength Gummies [costco.com] 250 mg, 150 Gummies, $18.99, reg. $23.99
trunature Magnesium Nighttime Powder [costco.com], 636 Grams, Melatonin, L-Theanine & Goba, 22.4 oz, $23.99, reg. $29.99
Natural Vitality Calm Magnesium Citrate Gummies [costco.com], 240 Gummies, raspberry lemon flavor, $25.99, reg. $32.99
Natural Vitality Calm Magnesium Citrate Powder [costco.com], 20 Ounces, raspberry lemon flavor drink mix, $22.99, reg. $27.99

Shipping is included. Prices above are online. Prices may be different in warehouse.

Valid through Jan. 19, 2026

Health benefits vary depending on the kind of magnesium, but magnesium may help with relaxation, bone health, muscle function, nerve health, constipation, heart health, mood, and sleep.

Community Notes

This collaborative space allows users to contribute additional information, tips, and insights to enhance the original deal post. Feel free to share your knowledge and help fellow shoppers make informed decisions.

About the Poster

BruDeal Joined in Nov 2011

1,308 Deal Posts 2,359 Comments Posts8,136 Reputation Points1,493 Votes Submitted

Deal Details

Community Notes

About the Poster

Costco.com offers its members several Magnesium supplements on sale.

Kirkland Signature Calcium Citrate, Magnesium and Zinc Tablets [costco.com], 500 Tablets, $14.49, reg. $16.99
Nature Made Extra Strength Magnesium Softgels [costco.com], 400 mg., 180 Softgels, $16.49, reg. $19.99
Qunol Magnesium Extra Strength Gummies [costco.com] 250 mg, 150 Gummies, $18.99, reg. $23.99
trunature Magnesium Nighttime Powder [costco.com], 636 Grams, Melatonin, L-Theanine & Goba, 22.4 oz, $23.99, reg. $29.99
Natural Vitality Calm Magnesium Citrate Gummies [costco.com], 240 Gummies, raspberry lemon flavor, $25.99, reg. $32.99
Natural Vitality Calm Magnesium Citrate Powder [costco.com], 20 Ounces, raspberry lemon flavor drink mix, $22.99, reg. $27.99

Shipping is included. Prices above are online. Prices may be different in warehouse.

Valid through Jan. 19, 2026

Health benefits vary depending on the kind of magnesium, but magnesium may help with relaxation, bone health, muscle function, nerve health, constipation, heart health, mood, and sleep.

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