Can the medications typically taken for ulcerative colitis (remicade, 6mp) effect male infertility?

Usually not: Remicade (infliximab) has lot of other side effects but not male infertility.

Perhaps: Infliximab may decrease sperm motility and the number of normal oval forms. Whether these changes translate into impaired fertility is unknown. 6mp has been rarely associated with birth defects even when the father takes the medication. The benefits, however, often outweigh the risks and you need to discuss this with your doctor.

Bank sperm: Before starting any treatment protocol that may have an effect on fertility, consider banking a few ejaculations. It's not that expensive and provides peace of mind.

Caution: Remicade (infliximab) has not been associated with male infertility. Also women being treated for a disease with remicade, (infliximab) it can be continued if the concern for disease control is high.6\mp is a different type of drug and works differently. Cases of infertility exist when the drug is used in higher cancer dosages. It appears in may have less of an affect on fertility at lower dosages. Talk with ur doctor.