Why Supreme Multivitamin Clobbers the Competition

How does your multivitamin compare?

Download print version

You can also learn more by reading the document, "Buying a Multivitamin? Buyer Beware."

A representative sampling of nutrients from each product. Based on recommended daily usage.
   SUPREME
MULTIVITAMIN
CENTRUM
SILVER

ONE-A-DAY
MAXIMUM

NATURE MADE
MULTI-COMPLETE

KIRKLAND SIGNATURE
DAILY MULTIVITAMIN

 Form* Vegetarian capsule
Tablet
Tablet
Tablet
 Tablet
 Binders
 None Yes
Yes
Yes
Yes
 Vitamin D
 1000 IU
400 IU
400 IU
1000 IU
400 IU
 Vitamin C
 1000 mg
60 mg
60 mg
180 mg
120 mg
 Vitamin E
 200 IU 45 IU
30 IU
50 IU
60 IU
 Vitamin B1
50 mg
1.5 mg
1.5 mg
1.5 mg
1.5 mg
 Vitamin B5
 50 mg
10 mg
10 mg
10 mg
10 mg
 Folic acid
 400 mcg
400 mcg
400 mcg
400 mcg
400 mcg
 Calcium**  150 mg
(citrate)
200 mg
(carbonate)
162 mg
(phosphate)
162 mg
(carbonate)
162 mg
(form unspecified)
 Magnesium  150 mg
(amino acid chelate)
100 mg
(oxide)
100 mg
(oxide)
100 mg
(oxide)
100 mg
(oxide)
 Iron     18 mg
18 mg
18 mg
 Zinc  10 mg
(amino acid chelate)
15 mg
(oxide)
15 mg
(oxide)
15 mg
(oxide)
22.5 mg
(oxide)
 Selenium  75 mcg
20 mcg
20 mcg
70 mcg
45 mcg
 Manganese  3 mg
2 mg
3.5 mg
4 mg
2.5 mg
 

The most popular multivitamin contain low amounts of, and poorly absorbed, nutrients. This includes Centrum Silver, One-A-Day Maximum, Multi-Complete and Kirkland Signature Daily Multivitamin.

*Tablets versus capsules. Tablets are generally more difficult to break apart in your stomach because they contain binders that hold it together. These pills can go right through you without being dissolved or absorbed. While not all tablets have this problem, it would be extremely difficult for the general consumer to know if any one tablet is good or not. But capsules don't have this problem. They are superior to tablets. Always buy capsules if you can.

**Calcium. Calcium carbonate is poorly absorbed. The most absorbable form of calcium is calcium citrate.

Magnesium and Zinc. The “oxide” form of minerals, such as magnesium and zinc, is an inferior form of mineral. The body can only absorb 2% of the magnesium when it’s in the oxide form. Even though it says you’re getting 100 mg magnesium, your body can only absorb about 2 mg. The rest passes right through you and out your stool.

Iron. It is recommended by medical professionals that men and post-menopausal women not take dietary supplements containing iron. This is because it puts them at risk for a condition called “iron overload.” This is a potentially dangerous situation that can cause damage to kidneys, pancreas, liver, the heart and other organs.

Learn more


Read the document, "Buying a Multivitamin? Buyer Beware."