There are two forms of Prevymis 480: tablets and solution for intravenous (into a vein) infusion.
The recommended adult dose of letermovir is 480 mg taken by mouth, once daily. It should be started on or after the day you receive the stem cell transplant, but no later than 28 days after the transplant. It is generally taken until 100 days after the transplant.
The tablets should be taken at approximately the same time each day. Swallow the tablets whole with some fluid. Do not crush or chew the tablets. Letermovir may be taken with food or on an empty stomach.
If you are receiving the intravenous form of Prevymis 480, it will take approximately 1 hour for the infusion to complete.
Many things can affect the dose of medication that a person needs, such as body weight, other medical conditions, and other medications. If your doctor has recommended a dose different from the ones listed here, do not change the way that you are taking the medication without consulting your doctor.
It is important to take Prevymis 480 exactly as prescribed by your doctor.
If you miss a dose, take it as soon as possible and continue with your regular schedule. If it is almost time for your next dose, skip the missed dose and continue with your regular dosing schedule. Do not take a double dose to make up for a missed one. If you are not sure what to do after missing a dose, contact your doctor or pharmacist for advice.
Store Prevymis 480 in its original package at room temperature, protect it from light and moisture, and keep it out of the reach of children.
Do not dispose of medications in wastewater (e.g. down the sink or in the toilet) or in household garbage. Ask your pharmacist how to dispose of medications that are no longer needed or have expired.