Can you use a spermacide with an iud?

Yes, but not needed. Iud is high effective in reducing/preventing pregancy, and so spermicide is not typically needed. As you probably already know, using condom (which often contains spermicide) is advisable to reduce risks of std transmission and it is safe to use on women who have an iud in place. Iud only reduces/prevents pregnancy, not std...Thus adding a condom, with/out spermicide is advisable...