How should I use letermovir?
Follow all directions on your prescription label and read all medication guides or instruction sheets. Use the medicine exactly as directed.
Letermovir oral is taken by mouth.
Letermovir injection is given as an infusion into a vein. A healthcare provider will give your first dose and may teach you how to properly use the medication by yourself.
You may take letermovir tablets with or without food.
Do not crush, chew, or break a letermovir tablet. Swallow it whole.
Read and carefully follow any Instructions for Use provided with your medicine. Ask your doctor or pharmacist if you don't understand all instructions.
Prepare an injection only when you are ready to give it. Do not use if the medicine looks cloudy, has changed colors, or has particles in it. Call your pharmacist for new medicine.
You may need to mix the injection solution with a liquid (diluent) in an IV bag before using it. If you are using the injections at home, be sure you understand how to properly mix and store the medicine.
You can store the mixture for up to 24 hours at room temperature, or up to 48 hours in a refrigerator.
Letermovir injection must be given slowly, and the infusion can take at least 1 hour to use all of the medicine in the IV bag.
Letermovir oral or injection is usually given once per day for up to 100 days after your stem cell transplant.
Use this medicine for the full prescribed length of time, even if you have no symptoms. Skipping doses may increase your risk of further infection that is resistant to medication.
Store letermovir tablets or unmixed injection solution in the original packaging at room temperature, away from moisture, heat, and light. Keep each tablet in the foil blister pack until you are ready to take a tablet.
Do not shake the injection solution bottle. Prepare your dose only when you are ready to give an injection. Do not use if the medicine has changed colors or has particles in it. Call your pharmacist for new medicine.
Each single-use vial (bottle) of letermovir injection is for one use only. Throw it away after one use, even if there is still medicine left inside.