Vitamin C at 1000mg as ascorbic acid. This is at the diminishing returns threshold (absorption drops above single doses of 200mg), but total daily intake of 1000mg is well-supported for immune function. Simple, effective, no-frills. Rose hips at 25mg is negligible but harmless.
The set is generated, never written by the brand.
Kirkland Signature Vitamin C 1000mg: the formulation holds up. Lead: Vitamin C at 1000 mg. Vitamin C at 1000mg as ascorbic acid. Clinical dose on the primary, and the panel holds together.
The Honda Civic of vitamin C. 500 tablets, USP Verified, under $15 at Costco. Less than 3 cents per day. No fancy delivery system, no Instagram marketing. Just reliable vitamin C that does the job for a year and a half.
2 of 2 shown, 1 dose at what the trials used

This read comes from the product's own supplement facts panel. Every dose was cross-referenced with published clinical trials to see whether it matches what the studies actually used.

