Vitamin D with Magnesium

What this is. Vitamin D3 with magnesium in one capsule. D is the one most people in northern states are short of in winter; magnesium is involved in using it.

2,000 IU of vitamin D3 in one capsule, with 31 mg of magnesium alongside it. Read that second number carefully: this is vitamin D with magnesium, not a magnesium supplement, and 31 mg is 7% of the Daily Value.

What you are actually getting, per capsule

• Vitamin D3 (as cholecalciferol) — 50 mcg, which is 2,000 IU (250% of the Daily Value)
• Magnesium (as magnesium citrate) — 31 mg (7% of the Daily Value)

Worth knowing before you buy

The vitamin D side of this is a straightforward everyday dose. 2,000 IU is a common maintenance amount and it sits well under the 4,000 IU daily upper limit for adults. Check your multivitamin before you add it, though — vitamin D stacks, and multis often already carry 600 to 1,000 IU.

The magnesium is the part bottles like this one usually blur. 31 mg against a Daily Value of 420 mg is a supporting amount, and it is there because magnesium is involved in how the body handles vitamin D. It is not a magnesium dose in any meaningful sense. If you are short on magnesium, or taking it for sleep or muscle cramps, buy magnesium on its own — a real magnesium capsule runs 200 to 400 mg, six to twelve times what is in here.

So: buy this if you want 2,000 IU of D3 and you like that a little magnesium rides along. Do not buy it expecting to have covered magnesium.

How to take it

One capsule daily with 6–8 oz of water. Vitamin D is fat-soluble, so take it with a meal that has some fat in it. 30 capsules — a 30-day supply.

Other ingredients

Gelatin capsule.

The capsule is gelatin, so this one is not suitable for vegetarians or vegans.

Cautions

Speak to your doctor before taking vitamin D if you have kidney disease, high blood calcium, or a condition such as sarcoidosis, and if you take a thiazide diuretic or digoxin. Magnesium can interfere with the absorption of some antibiotics, so separate them by a couple of hours.

Keep out of the reach of children. Do not use if the safety seal is damaged or missing. Store in a cool, dry place. Do not exceed the recommended dose. If you are pregnant, nursing, under 18, taking prescription medication or living with a medical condition, speak to your doctor or pharmacist before starting this or any supplement.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.