Final answer:
When a patient receiving oral contraceptives is placed on antibiotic therapy, it is important to use a barrier form of protection during sex to avoid unintended pregnancy.
Step-by-step explanation:
When a patient receiving oral contraceptives is placed on antibiotic therapy, it is important to use a barrier form of protection during sex. This is because antibiotics may reduce the effectiveness of oral contraceptives in some women, increasing the risk of unintended pregnancy. It is recommended to use a backup method of birth control, such as condoms, while taking antibiotics.