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MAGNESIUM GLYCINATE VS CITRATE: WHICH FORM SHOULD YOU CHOOSE?

NIH Office of Dietary Supplements — Magnesium · 21/09/2026 · added by men35 desk

Magnesium glycinate and magnesium citrate are two of the most common magnesium supplements. Both can provide magnesium, but their characteristics differ. Here's how to think about the choice without falling for “best magnesium” marketing. 𝗞𝗘𝗬 𝗕𝗘𝗡𝗘𝗙𝗜𝗧𝗦 • Understand glycinate vs citrate • Learn why elemental magnesium matters • Know when citrate's laxative effect can matter • Understand why there isn't one universal “best” form • See a specific MEN35 iHerb product option 𝗧HE TWO FORMS Magnesium glycinate is magnesium bound to glycine. Magnesium citrate combines magnesium with citric acid. Both are widely available and both can provide supplemental magnesium. But they're not interchangeable in every practical situation. 𝗠AGNESIUM GLYCINATE Glycinate is commonly selected by people looking for a magnesium supplement that is relatively gentle on the digestive system. It's frequently marketed for relaxation and sleep, although the evidence for magnesium as a sleep treatment remains limited and inconsistent. For MEN35 readers, the attraction is straightforward: If you want magnesium supplementation without deliberately seeking a laxative effect, glycinate may be a practical formulation to consider. 𝗠AGNESIUM CITRATE Citrate is another relatively well-absorbed form of magnesium. Its important practical difference is gastrointestinal. Magnesium citrate can draw water into the intestine and is commonly used in products intended to support bowel regularity. That can be useful for some people. For others, it can mean loose stools. So if you're buying magnesium primarily for general supplementation and have a sensitive stomach, the formulation deserves attention. 𝗪HICH IS BETTER ABSORBED? The answer isn't as simple as many supplement advertisements suggest. The NIH reports that several organic magnesium forms—including citrate—tend to be more bioavailable than magnesium oxide and magnesium sulfate. A systematic review of magnesium supplement bioavailability also concluded that organic formulations generally appeared more bioavailable than inorganic formulations, although study methods and products varied. That doesn't establish glycinate as universally superior to citrate. In fact, direct head-to-head evidence for common consumer formulations is limited. 𝗪HAT ABOUT SLEEP? This is where marketing often gets ahead of science. Glycinate is commonly associated with sleep and relaxation, but current randomized-trial evidence doesn't establish magnesium as a reliable treatment for insomnia. A 2026 systematic review found inconsistent sleep results and low-to-very-low certainty evidence. So choose glycinate because it fits your needs and tolerability—not because the label promises guaranteed sleep. 𝗠𝗘𝗡𝟯𝟱 𝗣𝗥𝗢𝗗𝗨𝗖𝗧 𝗣𝗜𝗖𝗞 For readers specifically looking for a magnesium glycinate product, one current iHerb option is: California Gold Nutrition Magnesium Glycinate — 180 Veggie Capsules. The current iHerb listing identifies magnesium glycinate as the magnesium source and provides 133 mg per capsule. Product availability and formulation can change, so always check the current label before purchasing. Check California Gold Nutrition Magnesium Glycinate on iHerb For an alternative formulation, Doctor's Best High Absorption Magnesium uses a magnesium lysinate-glycinate chelate and currently provides 200 mg per two-tablet serving. Check Doctor's Best Magnesium on iHerb 𝗪HAT SHOULD YOU CHOOSE? Choose based on the reason you're taking magnesium. Glycinate: Practical option when tolerability and a non-laxative formulation are priorities. Citrate: Practical option when you also want a formulation that can have a bowel-regularity effect. Neither should automatically be considered “the best magnesium.” 𝗠𝗘𝗡𝟯𝟱 𝗧𝗔𝗞𝗘𝗔𝗪𝗔𝗬 Don't choose magnesium based on the largest number on the bottle. Choose based on: • Form • Elemental magnesium • Tolerability • Purpose • Dose • Product quality 𝗧𝗛𝗘 𝗕𝗢𝗧𝗧𝗢𝗠 𝗟𝗜𝗡𝗘 For general supplementation, both glycinate and citrate can be reasonable options. Glycinate is often the more practical choice when digestive tolerance is a priority; citrate may make more sense when bowel regularity is also relevant.

For informational purposes only. This is not medical advice — consult a doctor before changing medication, supplements or training.