Dupes for 21st Century, Vitamin C, 500 mg, 110 Tablets
A dupe here means a relevant formula alternative—not an identical product. Compare ingredient overlap, meaningful differences, availability, and real prices. Retail commissions never affect ranking.
21st Century, Vitamin C, 500 mg, 110 Tablets
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$4.99
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No similar formulas in this scope
Nothing here shares enough of the decoded formula to support a useful comparison. Try a broader scope or return as the catalog grows.