Earth Harmony

50 mg of elemental magnesium per capsule, from 500 mg of magnesium glycinate compound. Those are not two different figures for the same thing — the 500 mg is the weight of the whole glycinate molecule and only about a tenth of it is magnesium. For context, the US RDA is 420 mg daily for adult men and 320 mg for women, so one capsule covers roughly 12–16% of it. The page's own Q&A acknowledges that reaching 400–500 mg would take about 8–10 capsules.

Because it is chelated to the amino acid glycine, which improves absorption and makes it far gentler on the digestive tract than magnesium oxide or citrate. Oxide is poorly absorbed and citrate commonly causes loose stools at higher doses. If you have previously given up on magnesium because of stomach upset, glycinate is the form worth trying.

The page lists no contraindications, which is a gap. Anyone with reduced kidney function should not supplement magnesium without medical supervision — the kidneys are how excess magnesium is cleared, and impaired clearance is the main route to hypermagnesaemia, which causes nausea, low blood pressure, muscle weakness and, at high levels, cardiac effects. Check with your doctor first if you have any kidney condition.

Yes, and the page does not say so. Magnesium reduces the absorption of tetracycline and quinolone antibiotics, bisphosphonates for osteoporosis and levothyroxine for thyroid conditions. Separate the supplement from those medicines by at least two to four hours. If you take prescription medication, run it past your pharmacist.

The page does not say, which makes the $24.95 price impossible to compare on a cost-per-dose basis. Email support@earthharmony.com and ask before ordering, particularly if you intend to take more than the single capsule on the label — at four or more capsules a day the bottle count determines whether this is reasonable value or expensive.

No certificate of analysis is published and there is no NSF or USP verification. What the page does provide is facility-level assurance: production at Global Healing's cGMP ASI certified facility in Phoenix, Arizona, with Made in USA stated. Facility certification covers manufacturing process, not the identity and potency of what is in the bottle, so ask for a batch COA if that matters to you.

Only diatomaceous earth, used as a flow agent during encapsulation. That is an unusually short list. Note the page claims "No Additives or Fillers" while also disclosing the flow agent, which is a contradiction — though diatomaceous earth at processing-aid levels is not a meaningful concern.

A 30-day money-back guarantee that notably accepts opened and used product, which lets you actually try it. Shipping charges are excluded, $5.99 return postage is deducted from US refunds, returns are limited to one per product per household, and refunds are processed one to two business days after the return arrives. Damaged, defective or incorrect items must be reported within 14 days of delivery. US return labels are emailed within one business day; international customers pay their own return postage.

Only on US orders above $150 — six bottles at this price. Below that, shipping is charged at checkout, which is worth factoring into the real cost of a single bottle.

Yes. Every Earth Harmony code listed on smartstorereview is tested before publication and rechecked regularly. Check whether a code applies to subscription (Autoship) orders as well as one-off purchases, since the page does not state the subscription discount.