US

Vitamin C: the numbers

Everything below is computed from the 88 curated vitamin c we track - no estimates, no third-party data.

88Curated models
43Brands
★ 4.7Average Amazon rating
686,891Amazon ratings

How Amazon buyers rate them

The average Amazon rating across the category is ★ 4.7. Low-rated products with meaningful rating volume are dropped during curation, so the spread below reflects the survivors.

★ 4.6-5.0
79
★ 4.3-4.5
9
★ 4.0-4.2
0
Below ★ 4.0
0

Brand share of the curated catalog

Emergen-C
13 · 15%
Now
8 · 9%
NATURE
8 · 9%
Amazon
3 · 3%
PURE
3 · 3%
Nature's
3 · 3%
THORNE
3 · 3%
Carlyle
3 · 3%

Most-rated models

Where these numbers come from

Counts, ratings, and rating totals are pulled from the curated vitamin c catalog on every build - the same data behind the Vitamin C category page. Junk listings and no-name brands are filtered out before anything is counted. Product data: last refreshed aug 4, 2026.