Final answer:
For a postpartum client with a fourth-degree perineal laceration, Docusate (Colace) would be the medication most commonly ordered to alleviate discomfort during bowel movements and support the healing process.
Step-by-step explanation:
A postpartum client with a fourth-degree perineal laceration is likely to experience discomfort and may have difficulty with bowel movements due to pain and the need to avoid straining the affected area. The medication most commonly ordered in this situation would be Docusate (Colace), which is a stool softener. This helps to prevent constipation and minimizes straining during bowel movements, which is important to facilitate healing of the perineal area.
Medications like Ferrous sulfate (Feosol) are used to treat anemia, Methylergonovine (Methergine) to reduce uterine hemorrhage, and Bromocriptine (Parlodel) to suppress lactation; while these may also be necessary in a postpartum client, they are not primarily used for the management of a perineal laceration.