Fosphenytoin is given only for a short time when you cannot take other forms of anticonvulsant medicine, such as when you are in the hospital or having surgery.
An IM injection is a shot given in your muscle (upper arm, thigh, buttocks). An IV infusion is a bag of medicine connected to a long tube with a needle on the end of it. The needle is placed in your vein, usually on the back of your hand or wrist, or inside your elbow. The medicine slowly drips from the bag through the tube and into your vein.
Your doctor will prescribe the amount of medicine you should have and when it will be given.
A nurse or other caregiver will give you the injections.
Sometimes you or a family member may be trained to give your shots at home.
If a dose is missed:
Take the missed dose as soon as possible.
If it is almost time for your next regular dose, wait until then to take your medicine and skip the missed dose.
You should not use two doses at the same time, unless directed by your doctor.
Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.
Avoid drinking alcohol.
Talk to your doctor if you are also taking birth control pills. Your dose may need to be changed or you may need to use another kind of birth control.
Make sure your doctor knows if you are also taking any of these medicines: cimetidine (Tagamet®); Cordarone®, disulfiram (Antabuse®); Coumadin®, Prozac® or other medicine for depression; diabetes medicine (pills, not insulin); other seizure medicine such as Tegretol®, phenobarbital, or Klonopin®.