[3] Captan was previously cited as Group B2, a probable human carcinogen by the US Environmental Protection Agency (EPA),[6] but was reclassified in 2004.

The EPA now states, "The new cancer classification considers captan to be a potential carcinogen at prolonged high doses that cause cytotoxicity and regenerative cell hyperplasia.

These high doses of captan are many orders of magnitude above those likely to be consumed in the diet, or encountered by individuals in occupational or residential settings.

Therefore, captan is not likely to be a human carcinogen nor pose cancer risks of concern when used in accordance with approved product labels.

[7] A similar reclassification has been made for folpet, a structurally related fungicide, which shares a common mechanism of toxicity.