Magnesium Oxide by 21st Century is a tablet carrying 250 mg of magnesium in a bottle of 110 tablets, for support of muscle and nerve function and bone tissue building. Magnesium oxide is the densest of the common magnesium salts in elemental content, which is why a single tablet can hold a large mineral dose without growing in size. It suits anyone covering their daily magnesium share in the fewest possible tablets, and anyone seeking bowel regularity support alongside mineral support.
What is magnesium oxide?
Magnesium Oxide is an inorganic mineral salt in which a magnesium ion binds an oxygen ion atom for atom. That simplicity of structure raises the proportion of elemental magnesium by compound weight to the highest among common magnesium salts, and at the same time makes it poorly soluble in water, with its release depending on stomach acidity.
Benefits of magnesium oxide
- Muscle relaxation support: Magnesium competes with calcium at its channels in the muscle fibre, the step that ends a contraction.
- Bowel movement support: Unabsorbed magnesium oxide holds water in the colon lumen by osmosis.
- Bone health support: Magnesium is incorporated into the hydroxyapatite crystal that gives bone its rigid frame.
- Nervous system support: Magnesium participates in regulating nerve cell excitability at NMDA receptors.
- Energy production support: The ATP molecule is not functional inside the cell unless bound to a magnesium ion.
- Heart rhythm support: Magnesium takes part in the work of the sodium-potassium pump in heart muscle cells.
How magnesium oxide works in the body
In the stomach, magnesium oxide reacts with hydrochloric acid and converts into a soluble form taken up by small intestine cells through transporters of the TRPM family. What is not absorbed continues into the colon holding water molecules around it, softening the intestinal content. Once in the bloodstream, the magnesium ion acts as a cofactor for hundreds of ATP-dependent enzymes, and its largest store settles in bone and muscle tissue rather than in blood serum.
What sets this formula apart
21st Century presents magnesium here in oxide form at 250 mg per tablet, a density meaning one tablet reaches what chelated forms need two or three tablets to reach, because the chelating molecule consumes a large share of tablet weight. Magnesium oxide is less soluble than citrate or glycinate, so it excels in dose density and is known in return for its effect on bowel movement. The 110-tablet bottle covers a long cycle of use.
Who is this product for?
- Anyone wanting a high magnesium dose in one tablet rather than several.
- Anyone with sluggish bowel movement who also wants mineral support.
- Anyone experiencing muscle cramps at the end of the day.
- Anyone looking for a large bottle that lasts a long time.
How to use
Take the Magnesium Oxide tablet at the amount stated on the label with food or straight after it, because the high stomach acidity of digestion is what frees magnesium from the oxide. Evening use is preferred by anyone aiming at muscle relaxation support, and it is best separated from calcium or iron supplements by two hours to avoid competition at absorption sites.
Product details
- Form: Tablet.
- Dose per tablet: 250 mg of magnesium.
- Chemical form: Magnesium oxide.
- Count: 110 tablets.
- Brand: 21st Century, United States.
Frequently asked questions
What is the difference between magnesium oxide and magnesium citrate?
Magnesium oxide is an inorganic salt high in elemental magnesium and low in solubility, while magnesium citrate is an organic salt that is more soluble and less dense in the element. Oxide is therefore chosen when the aim is a large dose in a small tablet.
Why is magnesium oxide recommended with food?
Release of magnesium from the oxide depends on the presence of stomach acid, which peaks during digestion. Taking it on an empty stomach lowers the proportion released and may cause digestive discomfort.
Does magnesium oxide always affect the bowel?
This effect varies from person to person and with the amount taken, and it stems from part of the salt remaining unabsorbed inside the colon. Starting with a smaller amount and increasing gradually helps identify a suitable level.
Cautions
- Not intended for pregnant or breastfeeding women.
- Not intended for anyone under 18 years of age.
- Consult a physician when taking chronic medication or in cases of kidney impairment.
- Not to be used as a substitute for a balanced diet.
Your satisfaction matters most to us. If you are not happy with your purchase for any reason, you can return it within 30 days of delivery for a full refund.
How do returns work?
Contact us on WhatsApp +962 7 8162 0564 or by email at qtrat.al97ah@qtrat.net
We arrange collection from your address at no cost to you.
We refund the full amount — including the delivery fee.
Are your products genuine?
Yes. Everything is imported from the United States, the United Kingdom and Turkey, and the Best Before date is printed on each product page.
How long does delivery take?
One to two working days, to every governorate in Jordan.
What does delivery cost?
Free on orders over 29 JOD. Below that, a small delivery fee applies, which our team confirms with you when the order is placed.
How can I pay?
Cash on delivery, Visa or Mastercard at the door, or CliQ. PayPal is available on request — message us and we will send you a payment link.
Can I return a product?
Yes. Our policy is deliberately flexible: if the product is not right for you, for any reason, you get a full refund including the delivery fee. Details in our Refund Policy.
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WhatsApp +962 7 8162 0564, email qtrat.al97ah@qtrat.net, or through Facebook and Instagram.
