Let's learn about the Fosphenytoin vaccine. Will this help our seizures?

Do you or someone you know have a seizure disorder, a condition like epilepsy? Or do you need help to stop seizures after brain surgery, or to control seizures that occur at that time? Fosphenytoin is a special injection that doctors use in such cases. This actually controls seizures by calming the nerve cells in our body that are firing too quickly. To put it simply, our brain sometimes sends out unnecessary electronic messages, just like a phone signal is disrupted and the call is not going through properly. This medicine helps to control that.

What exactly is this drug called Fosphenytoin?

Simply put, Fosphenytoin is a drug that is used to prevent and control seizures. This is especially important for people with epilepsy . It is also used to prevent seizures during and after brain surgery. The main function of this drug is to calm the overactivity of our nervous system. It works like calming a fussy child.

This medication may sometimes be prescribed by doctors for other conditions, so if you have any questions about this medication, it's best to ask your doctor or pharmacist. One of the brand names for this medication is Cerebyx .

What should I tell the medical team before using this medicine?

Before you are given the Fosphenytoin injection, there are a few things your medical team needs to know. These are important for your safety.

• Are you addicted to alcohol? (Alcohol use disorder)
• Are you of Asian ancestry? - Because our genetic background can affect the effectiveness of certain medications.
• Do you have any blood disorders or diseases?
• Do you have a heart condition? (Heart disease)
• Do you have kidney disease?
• Do you have liver disease?
• Do you have low blood pressure?
• Have you or anyone in your family had suicidal thoughts, plans, or attempts?
• Have you ever had an unusual allergic reaction to Phenytoin , other medications, foods, dyes, or preservatives?
• Are you pregnant? Or are you trying to get pregnant? (Pregnant or trying to get pregnant)
• Are you a breastfeeding mother? (Breast-feeding)

If any of these apply to you, it is very important to tell your medical team so they can treat you in the most appropriate way.

How do you use this medicine?

This medicine, called Fosphenytoin, is given as an injection . It is given directly into a vein (injection into a vein or infusion into a vein), or sometimes into a muscle (injection into a muscle). This is a medicine that is given under medical supervision in a hospital or clinic . It is not a medicine that you can take home.

Can this medicine be given to children?

Yes, in some special cases, this medicine can even be given to newborn babies. But special precautions need to be followed. So if you are giving this medicine to your child, talk to your medical team about it carefully and find out the details.

What happens if you take too much medicine? (Overdosage)

If you think you have taken too much of this medicine, call a poison control center or emergency room immediately. Since this is given in a hospital, medical staff will usually take care of this.

This medicine is just for you!

This is very important. This medicine is for you only. Never share this medicine with anyone else.

What if I miss a dose?

Since this medication is given in a hospital, it is not usually necessary to miss a dose. The medical staff will take care of that.

Other medications that may interact with this medicine (Interactions)

This is a very important part. If you are taking other medications, some of them may interact with Fosphenytoin. This means that taking these two medications together may change the way one works or increase the side effects.

There are several medications that should not be taken with this medicine:

• Some medications used to treat HIV infection or AIDS, when given together with cobicistat .
• Delavirdine
• Ibrutinib
• Ranolazine

In addition to this, there are other medications that can interact with Fosphenytoin:

Imagine you are taking medication for something else. Maybe it's a cold medicine, or a medicine for cholesterol, or a medicine for blood pressure. Any of these medications, whether you buy them at the pharmacy or a doctor's prescription, can interact with fosphenytoin. That's why it's important to tell your doctor about all the medications you take, even vitamins. Below are just a few examples:

• Albendazole
• Alcohol
• Aspirin and aspirin-like medications
• Some blood pressure medications, for example nifedipine, nimodipine, and verapamil
• Certain medications for cancer
• Some medications used to lower cholesterol, for example atorvastatin, simvastatin, and fluvastatin
• Certain medications for depression, anxiety, or psychotic disturbances
• Some medications for fungal infections, for example ketoconazole and itraconazole
• Some medications for irregular heartbeats, for example amiodarone and quinidine
• Other medications for seizures, such as carbamazepine, phenobarbital, and topiramate
• Some medications for stomach problems, for example cimetidine and omeprazole
• Chloramphenicol
• Cyclosporine
• Diazoxide
• Digoxin
• Disulfiram
• Doxycycline ( Doxycycline )
• Estrogen or progestin hormones
• Furosemide
• Halothane
• Isoniazid
• Medications that relax muscles for surgery
• Medicines used for HIV infection or AIDS
• Methylphenidate
• Opioid pain medications
• Phenothiazines, for example chlorpromazine, mesoridazine, prochlorperazine, thioridazine
• Praziquantel
• Reserpine
• Rifampin
• St. John's Wort (this is an herb)
• Steroid medications, such as prednisone or cortisone
• Sulfonamides, such as sulfamethoxazole or sulfasalazine
• Supplemental nutrients such as folic acid or vitamin D
• Theophylline
• Ticlopidine
• Tolbutamide
• Warfarin

This list does not include all medications. Therefore, it is important to list all medications you are taking, including herbal remedies, over-the-counter medications, and supplements.Tell your doctor about your medications. Also, tell your doctor if you smoke, drink alcohol, or use illegal drugs. These things can interact with your medication.

What are some things we should be especially careful about when taking this medicine?

When you are given Fosphenytoin, your medical team will regularly check your health.

• Regular medical checkups: Your doctor will check you regularly to check how well you are and to make sure the medicine is working properly. They may also need to do things like blood tests . This is because you need to be very carefully monitored while using this medicine.
• Do not stop taking the medication suddenly: Do not stop taking this medication suddenly without medical advice. Doing so may increase the risk of seizures.
• An identification card: It is a good idea to wear an identification card, necklace, or bracelet that contains details about your medical condition and the medications you are taking, as it can be very useful in an emergency.
• Serious skin reactions: Serious skin reactions may occur within a few weeks or months of starting this medicine. Tell your healthcare team right away if you develop a skin rash with symptoms such as fever or chills. The rash may be red or purple, and may later blister and peel. Or you may notice a red rash on your face, lips, neck, or underarms with swollen lymph nodes. If you notice anything like this , seek medical advice immediately .
• Dizziness and drowsiness: You may feel dizzy or drowsy. Do not drive, operate machinery, or do anything else that requires alertness until you know how this medicine affects you. To reduce the risk of dizziness or fainting, do not sit or stand up suddenly. This is especially important if you are elderly. Drinking alcohol can make you feel more dizzy, flushed, and have a faster heartbeat. So avoid drinking alcohol.
• Gum disease: This medication can cause unusual growth of gum tissues. Therefore, see a dentist regularly. If you need to have dental treatment, be careful not to damage your gums when brushing and flossing your teeth daily.
• Suicidal thoughts: This medication may increase your risk of suicidal thoughts or actions. Therefore, pay special attention to your mental state while taking this medication. If your mood gets worse, you feel like you are going to die, or you have suicidal thoughts , tell your healthcare team right away .
• Folic acid deficiency:This medication can lower your folic acid levels. So you need to make sure you are getting enough folic acid while taking this medication. Talk to your healthcare team about the foods and vitamins you are taking.

Side effects that may occur with this medicine

Like all medications, Fosphenytoin can cause side effects. Some are things you should tell your doctor about right away, while others are usually not serious but should be reported if they persist.

Side effects that should be reported to the doctor immediately:

• Allergic reactions or angioedema: skin rash, itching, hives, swelling of the face, eyes, lips, tongue, hands or feet, difficulty swallowing or breathing.
• Heart rhythm changes: fast or irregular heartbeat, dizziness, fainting, chest pain, difficulty breathing.
• High blood sugar (Hyperglycemia): Excessive thirst or frequent urination, unusual weakness or fatigue, blurred vision.
• Infection: Fever, chills, cough, or sore throat.
• Liver injury: Pain in the upper right abdomen, loss of appetite, nausea, light-colored stools, dark yellow or brown urine, yellowing of the skin or eyes, unusual weakness or fatigue.
• Pain, swelling, blue or purple discoloration at the injection site.
• Phenytoin toxicity: Uncontrollable eye movements, loss of balance or coordination, difficulty speaking, unusual weakness or fatigue, nausea, vomiting.
• Rash, fever, and swollen lymph nodes.
• Redness, blistering, peeling, or loosening of the skin (including the mouth).
• Slow heartbeat: dizziness, fainting, confusion, difficulty breathing, unusual weakness or fatigue.
• Swollen lymph nodes in the neck, groin, chest, or armpits.
• Unusual bruising or bleeding.

Side effects that are usually not serious, but should be reported to the doctor if they persist:

• Burning or tingling sensation in the hands or feet.
• Difficulty concentrating, remembering, or speaking.
• Dizziness.
• Drowsiness.
• Headache.

This list does not include all possible side effects. If you experience any other side effects, talk to your doctor for medical advice. If you wish, you can also report side effects to the FDA (Food and Drug Administration) at 1-800-FDA-1088.

How should I store the medicine?

This medicine, called Fosphenytoin, is given in a hospital or clinic. So you don't need to take it home and keep it. The medical staff will take care of it.

Finally, what to remember

Okay, so now I hope you have a better understanding of this injection called Fosphenytoin. Remember, this is an important medication that is used to control seizures. But there are also a few things to be careful about when using it.

The most important thing is to listen to what your doctor says and follow it exactly. If you have any questions or doubts, don't keep them to yourself, but ask your doctor, nurse, or pharmacist. They are there to help you.

This information sheet is only a summary. It may not contain all the details. So if you have any further questions about this medicine, talk to your doctor, pharmacist, or healthcare provider.

` Fosphenytoin, seizures, epilepsy, vaccination, side effects, brain surgery, nervous system