Osterly Market Vitamin C 1000 mg with Zinc 20 mg

1000 mg vitamin C. 20 mg elemental zinc. Both on the front.

This is the product the rest of the shop is modelled on: two actives, two real doses, both printed where you can see them before you buy.

What it's for

Vitamin C is required for collagen synthesis, iron absorption and immune cell function, and your body cannot make or store it. Zinc is involved in hundreds of enzyme reactions and in immune signalling. The pair is taken daily for general immune support. The trial evidence on colds is mixed, and starting once you are already ill has not held up well.

How to take it

• One serving daily with food
• Vitamin C above roughly 1000 mg is largely excreted, so more is not better
• Zinc on an empty stomach causes nausea in many people — food fixes it
• Long-term zinc above 40 mg a day can interfere with copper. This product is well under that; just count any other zinc you take

On the label

• 1000 mg vitamin C (ascorbic acid) per serving
• 20 mg zinc, stated as elemental
• 120 capsules

What this is not

• Not buffered or liposomal
• Not a multivitamin
• Not a cold cure

The straight answer

Twenty milligrams of zinc is a working dose. A great many 'vitamin C with zinc' products carry two or three milligrams — enough to put zinc on the label, not enough to matter.

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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. Talk to your doctor before starting any supplement, especially if you are pregnant, nursing, or taking prescription medication.