Vitamin B2 price per mg — cheapest first

Labels call both riboflavin and riboflavin-5′-phosphate sodium (R5P) "riboflavin", and the declared amount is stated as riboflavin equivalent. This page reads that declared figure directly, in mg.

Price per mg ranges from a low of $0.000312/mg to a median of $0.1777/mg. The median is 570× the lowest, so the cost of the same 1mg of Vitamin B2 spreads over a hundredfold across products. That means the per-unit gap between products near the top and the middle of the ranking is that large.

Price per mg is computed for 2,073 of the 2,207 listed (94%). The rest, missing a sale price or amount, are placed at the bottom of the ranking and excluded from the statistics above.

The Vitamin B2 amount per serving ranges from 0mg to 650mg, with a median of 3mg. The maximum is 217× the median, so high-dose singles and blends listing a small Vitamin B2 amount sit in the same table.

The products in this list come from 377 brands, and the sort order is determined solely by price per mg.

Products classified by label form notation number 457 (21% of the total), and the most frequently noted form is Riboflavin with 278. Products with no form notation, or whose notation does not match the classification rules, do not appear on the per-form pages, so the per-form product counts sum to less than the total product count above.

Riboflavin is also declared widely as a component of B-complex and multivitamin products, so products in the 1mg range sit in the same table as standalone products in the 100mg range. The price per mg for a blend has the cost of everything alongside it built in.