[cshenoy]

Some condoms contain casein, a by-product of milk which by definition makes it non-vegan friendly.

[frobozz]

This is a good point that I hadn't realised. It seems that both latex condoms and gloves can contain casein.

Apparently, this has messed up tests for latex allergy:

http://www.sciencedirect.com/science/article/pii/S0091674999...