Question

Copper ions-releasing IUDs are more ______ than non-medicated methods.

Answer 1

Copper ions-releasing IUDs are more efficient than non-medicated methods.

Explanation:

Copper ions-releasing intrauterine devices (IUDs) are more efficient because they release copper ions that increase phagocytosis of sperms within the uterus and suppress sperm motility and fertilizing capacity, making them more effective contraceptives compared to non-medicated methods. These copper ions enhance the contraceptive action beyond the physical presence of the device alone.