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forum threadLolaBunny21 | Staff posted Jun 19, 2025 07:58 PM
forum threadLolaBunny21 | Staff posted Jun 19, 2025 07:58 PM

100-Count Nature's Bounty Magnesium Mineral Supplement (500mg) $4.68 w/ S&S + Free Shipping w/ Prime or on $35+

$4.68

$9.07

48% off
Amazon
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Amazon [amazon.com] has 100-Count Nature's Bounty Magnesium Mineral Supplement (500mg) for $6.70 - 5% off when you checkout via Subscribe & Save - 25% off when you clip the coupon [amazon.com] on product page = $4.68. Shipping is free w/ Prime or on orders $35+.
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Amazon [amazon.com] has 100-Count Nature's Bounty Magnesium Mineral Supplement (500mg) for $6.70 - 5% off when you checkout via Subscribe & Save - 25% off when you clip the coupon [amazon.com] on product page = $4.68. Shipping is free w/ Prime or on orders $35+.

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Model: Nature's Bounty Magnesium Tablets - 500mg, 100 ct

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Jun 19, 2025 10:58 PM
46 Posts
Joined Dec 2023
MotherboardJaredJun 19, 2025 10:58 PM
46 Posts

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Not a terrible price but it's because this is derived from magnesium oxide. It has the worst bioavailability and is much less absorbable than other forms of magnesium on the market. But it's cheaper so you'll find it in most supplements or multivitamins. Not going to hurt you but might be better to spend the money to get a better one.
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Jun 19, 2025 11:26 PM
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Ck2hiJun 19, 2025 11:26 PM
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This will be a laxative for many ppl just fyi
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Jun 20, 2025 01:24 AM
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Joined Jul 2021
Big_SurJun 20, 2025 01:24 AM
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Magnesium Glycinate is better which improves sleep, calm nervous system and helps with muscle function. Usually comes on sale at Costco
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Jun 20, 2025 04:44 PM
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FabulousScent4192Jun 20, 2025 04:44 PM
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Magnesium oxide Poor Absorption Rate (~30% bioavailability)
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Jun 21, 2025 10:26 PM
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Joined Mar 2023
UniqueHamster817Jun 21, 2025 10:26 PM
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Quote from Big_Sur :
Magnesium Glycinate is better which improves sleep, calm nervous system and helps with muscle function. Usually comes on sale at Costco
Also, look into Magnesium Threonate. I believe it's the only form that can cross the blood brain barrier which can apparently support brain function better than other forms.
1
Jun 25, 2025 10:42 PM
210 Posts
Joined Jul 2019
RobbyDaBankJun 25, 2025 10:42 PM
210 Posts
The bioavailability of magnesium oxide is around 3-4%. It's one of the least bioavailable formulations of any vitamin/mineral. The label claims it has 500 mg of elemental magnesium, but because it's so poorly absorbed your body will only be able to use around 15 mg, out of the 300/400 mg RDA for women/men.
Last edited by RobbyDaBank June 25, 2025 at 04:51 PM.
Jun 25, 2025 10:44 PM
210 Posts
Joined Jul 2019
RobbyDaBankJun 25, 2025 10:44 PM
210 Posts
Quote from FabulousScent4192 :
Magnesium oxide Poor Absorption Rate (~30% bioavailability)
It's even worse: 3-4%.

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Jun 26, 2025 04:05 AM
134 Posts
Joined Feb 2017
b5f23535-cf80-49fd-b55e-84ca86Jun 26, 2025 04:05 AM
134 Posts
Quote from MotherboardJared :
Not a terrible price but it's because this is derived from magnesium oxide. It has the worst bioavailability and is much less absorbable than other forms of magnesium on the market. But it's cheaper so you'll find it in most supplements or multivitamins. Not going to hurt you but might be better to spend the money to get a better one.
yes the magnesium oxide is truly only good for those who are suffering from constipation and the cereals also use the magnesium oxide also as well.

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