Qunol Magnesium 420mg, Extra Strength, High Absorption, Vegetarian, 180ct Review

Qunol Magnesium Extra Strength 420 mg is a once-daily dietary supplement expertly formulated to support nerve, bone, muscle, and heart health. Nearly half of Americans (48%, according to an analysis of NHANES 2013-2016 data) do not ingest enough magnesium from food and beverages alone to meet their nutritional needs. To help bridge this nutritional gap, each two-capsule serving of Qunol Magnesium Extra Strength delivers 420 mg of magnesium, providing 100% of the recommended Daily Value in two convenient capsules. The formula is specifically focused on superior absorption, utilizing buffered chelated magnesium glycinate, which offers high absorption compared to regular magnesium composed of 100% magnesium oxide, and provides extra strength potency compared to Qunol Magnesium 200 mg Gummies. As an essential mineral backed by the trusted medical science of Qunol, this high-absorption supplement promotes healthy nerve, bone, and muscle function, while also helping to support muscle relaxation and a healthy response to occasional stress. For daily use, adults are instructed to take two capsules daily, or as recommended by a healthcare professional. The displayed 120-count bottle (with a 180-count option also listed on the page) contains 60 servings per container. In addition to its active ingredient of 420 mg buffered chelated magnesium glycinate, the product is made with a vegetarian hydroxypropyl methylcellulose capsule, silicon dioxide, and magnesium stearate. It is thoughtfully crafted to accommodate dietary restrictions and preferences: the formula is completely gluten-free, vegetarian, made without animal-derived ingredients, and formulated without synthetic dyes. Furthermore, it is free of major food allergens, including milk, egg, fish, shellfish, wheat, peanuts, and their by-products.

Product Focus: Regularity: Fast ReliefAlso covers:Digestion
Tier ⓘ
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Evidence ⓘ
How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.
Positive Reviews
Biohacker Mentions
Cost per month
$9

Study, Trial or Testing Result Summary

MembersHuman studies

This product provides 420 milligrams of magnesium as buffered chelated magnesium glycinate, which is the 800 milligrams daily dose that in studies for constipation . Human trials mainly tested magnesium oxide and magnesium sulfate rather than magnesium glycinate. …

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Review Totals and Summary

Members4,777 reviews
4,777 reviews · Walmart 4,491 · Costco 154 · Qunol 130 · Fry's Food Stores 1 · Kroger 1

Qunol Magnesium 420mg, Extra Strength, Absorption, Vegetarian, 180ct has garnered approximately 4777 ratings across various stores, with giving it 4 or 5 stars, indicating a generally reception. **What it did for them** customers report from taking this magnesium supplement. It is frequently for with body pain, restless legs, and supporting heart . …

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Biohacker Summary

MembersWhat our biohacker panel says

Forms matter to them: glycinate is favored by three for calming and sleep, and threonate by four, who take 400 mg before bed. Others suggest 300 mg before bed, 400 to 500 mg a day as a general need, or 300 to 500 mg a day as a minimum, and take it in the evening or 90 minutes to 2 hours before bedtime. …

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RAL Summary

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More Details

MembersBody systems · Combine with · Possible side effects

Body systems: Digestive system. Combine with and possible side are for members.

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Supplement Facts

Magnesium 420 mg
Supplement Facts
Serving Size 2 Capsules
Servings Per Container 60
Amount Per Serving% Daily Value
Magnesium (as chelated magnesium glycinate buffered)420 mg100%

Other ingredients: Hydroxypropyl methylcellulose (capsule), silicon dioxide, magnesium stearate.

Label source: Qunol · Report a label change

Where to Buy

Qunol · Walmart · Costco
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More regularity: fast relief products

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Graded October 28, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.