Which statement is true regarding the use of clomiphene?

Clomiphene is primarily used as a fertility medication to induce ovulation in women who have difficulty conceiving. One of the well-known effects of clomiphene is that it can stimulate the ovaries to produce multiple eggs during a single ovulatory cycle. This increases the chances of conception but also raises the risk of multiple pregnancies, such as twins or higher-order multiples. This characteristic makes the statement about its potential to lead to multiple pregnancies accurate.

In contrast, while it is essential for healthcare providers to consider contraindications and monitor for side effects, the other statements do not hold true in the context of clomiphene's established use and effects. For instance, it is not used for preventing labor, and while precautions are necessary for lactating women, it is not universally contraindicated in this group. Lastly, clomiphene can have side effects, negating the assertion that it has none. Understanding these factors is crucial for safely administering clomiphene and managing the expectations of patients seeking to conceive.