Can I simply replace my 15 mg dose of Elavil with my 30 mg dose of Cymbalta tonight?

It is possible to replace Elavil with Cymbalta, but it may require a cross-tapering process. When switching medications, it is important to start Cymbalta at 30 mg while gradually decreasing Elavil dosage over time. It is important to be mindful of potential side effects such as constipation, dry mouth, and dizziness. It is also noted that Elavil is more commonly associated with weight gain compared to Cymbalta, which has a lower frequency of weight-related side effects. It is recommended to consult with a healthcare professional before making any changes to medication.