- Male participants whose partner is of child bearing potential, unless willing to use an appropriate barrier method of contraception (condom and spermicide) in addition to having their female partner use another form of barrier contraception (e.g. occlusive cap (diaphragm or cervical vault/caps) with spermicide) during the study and for 3 months from date of last dose (however a male condom should not be used in conjunction with a female condom);