3 formulas

Ester-C 500 mg

Three Ester-C formulas in smaller pieces: two of them make one 1,000 mg serving.

Tablet500 mg

Ester-C 500 mg 24 Hour Tablets

2 tablets = 1,000 mg + 204 mg citrus bioflavonoids

4.7 (8,901) 4.7 out of 5 from 8,901 ratings

from $6.9716¢ a serving · 90 tablets
Capsule500 mg

Ester-C 500 mg with Citrus Bioflavonoids Capsules

2 capsules = 1,000 mg + 400 mg citrus bioflavonoids

4.8 (10,021) 4.8 out of 5 from 10,021 ratings

from $8.0427¢ a serving · 60 capsules
Veg tablet500 mg

Ester-C 500 mg with Citrus Bioflavonoids Vegetarian Tablets

2 tablets = 1,000 mg + 400 mg citrus bioflavonoids

4.8 (1,344) 4.8 out of 5 from 1,344 ratings

from $10.1723¢ a serving · 90 tablets

A 500 mg unit is half the size of the 1000 mg one, which helps if large tablets catch in your throat. The panels count a serving as two, so the label still reads 1,000 mg of vitamin C per serving.

The 500 mg 24 Hour tablets are coated and come in the yellow box with the C-Sorb complex. The 500 mg capsules and the 500 mg vegetarian tablets come from the bottle line, with 400 mg of citrus bioflavonoids per two-unit serving. The vegetarian tablets come in the largest bottle we make, 450 tablets, which is 225 servings.

To see Ester-C 500 mg next to every other formula of Ester-C tablets and capsules, compare them.

Ester-C 500 mg: the formulas compared
Formula	Serving	Bioflavonoids	Calcium	Bottle sizes	Per serving, from
500 mg 24 Hour Tablets	2 tablets = 1,000 mg	204 mg	110 mg	90, 4 × 90	15¢
500 mg with Citrus Bioflavonoids Capsules	2 capsules = 1,000 mg	400 mg	110 mg	60, 120, 240, 300	19¢
500 mg with Citrus Bioflavonoids Vegetarian Tablets	2 tablets = 1,000 mg	400 mg	110 mg	90, 450	16¢

Questions about Ester-C 500 mg

Why does your Ester-C 500 mg serving list two tablets?

The panel counts a serving as two 500 mg units, so the amount per serving reads 1,000 mg of vitamin C, the same as the 1000 mg products.

Is Ester-C 500 mg easier to swallow?

Each tablet or capsule holds half the vitamin C, so the piece is smaller. Many people who find the 1000 mg tablet large choose the 500 mg one for that reason.

What does 24 Hour mean on the Ester-C 500 mg box?

It is the name of the product. It refers to the maker-funded study that measured vitamin C in white blood cells over 24 hours. The study and its funding are described in our buffered vitamin C article.