What advice should patients follow regarding hydration when using anticholinergic medications?

Patients using anticholinergic medications should maintain adequate hydration to manage dry mouth and prevent dehydration. Anticholinergic agents can cause a decrease in saliva production, leading to dry mouth, which can be uncomfortable and may affect oral health. Drinking enough fluids can help alleviate this symptom. Furthermore, these medications can also lead to an increased risk of dehydration, particularly if patients experience side effects such as sweating or heat intolerance. Therefore, proper hydration is crucial for both comfort and health when taking these medications.

The other options either suggest inadequate hydration or inappropriate recommendations, which could worsen side effects rather than alleviate them.