Which medication can cause both xerostomia and delayed healing?

Corticosteroids can cause both xerostomia, which is dryness of the mouth, and delayed healing due to their effects on the immune system and inflammation. Corticosteroids work by suppressing the immune response and modulating inflammation, which can lead to a reduction in the function of salivary glands, resulting in decreased saliva production and ultimately xerostomia. Additionally, because corticosteroids dampen the body's inflammatory response, they can interfere with normal healing processes, leading to delayed wound healing after injury, surgery, or other trauma.

In the context of other options, while anticoagulants can affect bleeding and clotting, they do not directly cause xerostomia or delayed healing. Diuretics can lead to dryness by causing increased urination and potential fluid imbalance, but they are not typically linked to impaired healing. Analgesics, particularly non-steroidal anti-inflammatory drugs (NSAIDs), may have an impact on inflammation but are not specifically known for causing xerostomia or delaying healing in the same way corticosteroids do. Thus, corticosteroids are the medication most associated with the combined effects of xerostomia and delayed healing.