Erdafitinib (Balversa®)

Store your medication in the original container with the label. If you want to use a pillbox, talk to your pharmacist. Keep it in a dry place at room temperature unless your provider or pharmacist tells you otherwise. Keep containers out of reach of children and pets.

If a caregiver prepares your dose for you, they should consider wearing gloves or pour the pills directly from their container into the cap, a small cup, or directly into your hand. They should avoid touching the pills. They should always wash their hands before and after giving you the medication. Pregnant or nursing people should not prepare the dose for you. Ask your provider where to return any unused medication for disposal. Do not flush down the toilet or throw in the trash. 

Some cancer medications are only available through specialty pharmacies. Your provider or pharmacist will start this process. Your insurance plan may also affect where you can get your medication.  Call your prescription plan provider to find out which specialty pharmacies are in-network.

This medication may be covered by your prescription plan. If you qualify, you may be able to get financial help through patient assistance programs (PAP). Co-pay cards may also be available to lower your out-of-pocket cost if you have commercial (not Medicare/Medicaid/Tricare) insurance. Your pharmacist, social worker, or navigator can help find resources for financial support.

These are some of the most common or most serious side effects of this medication. Talk with your provider about the side effects you are having and how they can be managed.

This medication can cause sores or soreness in your mouth and/or throat, called mucositis. Tell your providers if your mouth, tongue, inside of your cheek, or throat becomes white, has ulcers, or is painful. Medications can be used to manage pain. Regular mouth care can help prevent or manage mouth sores. Some things you can do are:

• Brush with a soft-bristle toothbrush or cotton swab twice a day.
• Avoid mouthwashes that contain alcohol. A baking soda and/or salt with warm water mouth rinse (2 level teaspoons of baking soda or 1 level teaspoon of salt in an eight-ounce glass of warm water) can be used a few times each day.
• If your mouth gets dry, eat moist foods, drink plenty of fluids (6 to 8 glasses), and suck on sugarless hard candy.
• Avoid smoking and chewing tobacco, and drinking alcoholic beverages and citrus juices.

Fatigue can cause exhaustion, feeling worn out and that your body is "heavy" and hard to move, or being unable to focus. It is common when you have cancer, and it is not the same as feeling tired. You may need to adjust your schedule to manage fatigue. Plan times to rest during the day and save your energy for more important activities. Exercise can help lessen fatigue. Talk to your providers about ways to deal with this side effect.

This medication can cause kidney problems, like an increased creatinine level. Your provider may monitor for kidney problems with blood tests. Symptoms may be:

• Less urine output than normal.
• Blood in the urine.
• Swelling in the ankles.
• Loss of appetite.

Tell your provider if you have any of these symptoms.

Diarrhea is when you pass three or more stools in a day. Your providers can suggest medications to relieve diarrhea. Do not take any medications to manage your diarrhea without talking to your provider first, as your stool may need to be tested. To manage it, try eating foods that are low in fiber and bland, like white rice and boiled or baked chicken. Try not to eat raw fruits, vegetables, whole grain breads, cereals, and seeds. Soluble fiber is a type of fiber found in some foods that helps absorb (soak up) fluid. Foods high in soluble fiber are applesauce, bananas (ripe), canned fruit, oranges, boiled potatoes, white rice, foods made with white flour, oatmeal, cream of rice, cream of wheat, and farina. Stay hydrated by drinking 8 to 10 glasses of non-alcoholic, non-caffeinated fluid each day.

Xerostomia is dry mouth. Dry mouth can be uncomfortable and affect your speech, swallowing, and dental health. Here are some ways to manage:

• Brush your teeth often with fluoride toothpaste.
• Floss once a day, if your provider says you can.
• Chew sugar-free gum or suck on sugar-free candy to help make saliva.
• Rinse your mouth often to keep it moist.
• Ask about gels and rinses that help you make more saliva.

Talk to your provider if you start or continue to have xerostomia. 

The medication may cause skin and nail changes. These side effects are common and can often be managed by making changes in how you care for your skin and nails. 

Skin Changes 
You may have a rash that looks like acne, but it is not acne and should not be treated with acne products. The rash can be:

• Red, swollen, dry, or crusty.
• Sore or tender.
• Itchy or flaky.
• Your skin may also be very dry and can crack, peel, or feel scaly.

This rash often starts in the first week of treatment, but it can happen at any time.
Your provider may prescribe tetracycline (an antibiotic) and a topical (goes on your skin) steroid cream to help lessen skin irritation.

How to Take Care of Your Skin

• Moisturize your skin at least twice a day with a thick, alcohol-free lotion or cream, especially after bathing.
• Protect your skin from the sun by using sunscreen (SPF 30 or higher), wearing a hat and sunglasses, and avoiding direct sunlight.
• Bathe or shower in lukewarm water (not hot) and gently pat your skin dry.
• Use gentle, fragrance-free soaps, lotions, and laundry products.
• Wear gloves when doing housework, dishes, or gardening.
• Drink plenty of water.
• Try not to scratch your skin. 
• Call your provider if you get a rash – they can suggest or prescribe creams or pills to reduce symptoms.
• Call right away if your skin blisters or peels.

Nail and Cuticle Changes (Paronychia)
This medication may also cause changes to the skin around your fingernails and toenails. This is called paronychia.
You might have:

• Red, swollen, or painful skin around your nails.
• Small cuts or cracks (like paper cuts) near your nails or knuckles.
• Nails becoming thick, having ridges, or falling off.

These changes might not go away after treatment, or they may start months after you start treatment.
How to Take Care of Your Nails

• Follow the same skin care tips listed above.
• Don’t bite your nails or cut your cuticles.
• Keep nails clean and dry.
• You can use regular nail polish, but avoid fake nails (like gels, acrylics, or overlays).
• Tell your provider if your nails fall off, become painful, or if you notice any changes or discomfort.

This medication can cause liver toxicity, or liver problems, which your provider may monitor for with blood tests called liver function tests. Symptoms may be:

• Yellowing of your skin or eyes.
• Dark or brown urine.
• Pain in your abdomen (belly).

Tell your provider if you have any of these symptoms.

Nutrition is an important part of your care. Cancer treatment can affect your appetite and make it hard to eat. Ask your provider about nutrition counseling services. Some tips you can follow are:

• Try to eat five or six small meals or snacks during the day, instead of 3 larger meals.
• Nutritional supplements may help if you are not eating enough.
• You may have a metallic taste or find that food has no taste. You may dislike foods or beverages that you liked before cancer treatment. These symptoms can last for months or longer after treatment ends.
• Avoid any food that you think smells or tastes bad. If red meat is a problem, eat chicken, turkey, eggs, dairy products, and fish without a strong smell. Sometimes cold food has less of an odor.
• Add extra flavor to meat or fish by marinating it in sweet juices, sweet and sour sauce, or dressing.
• Use seasonings like basil, oregano, or rosemary to add flavor.

Anemia is when your red blood cell count is lower than normal. Red blood cells carry oxygen to the tissues in your body. When your red cell count is low, you may feel tired or weak. Tell your providers if you have shortness of breath, trouble breathing, or pain in your chest. If your count gets too low, you may receive a blood transfusion.

Constipation is when you have less bowel movements than usual or are having trouble passing stool. To relieve constipation, you can include fiber in your diet (fruits like prunes, apples, peaches, and pear nectars/juices), drink 8 to 10 glasses of non-alcoholic fluids a day, and stay active. Taking a stool softener once or twice a day can prevent constipation. If you do not have a bowel movement for 2 to 3 days, call your provider. 

Hand-foot syndrome (HFS) is a skin reaction on the palms of your hands and/or the soles of your feet. HFS can be caused by certain chemotherapy agents being absorbed (taken in) by your skin cells. HFS can start as a mild tingling, numbness, pins-and-needles feeling, redness, or pain or swelling of your hands and/or feet. It can lead to painful swelling, blistering, or peeling skin, making it hard to do your normal activities. Tell your providers right away if you have these symptoms, as they may need to change your chemotherapy dose or take a break to let your skin heal. Some ways to help prevent HFS are:

• Keep your hands and feet clean and dry.
• Avoid tight shoes or socks.
• Avoid activities that put pressure on your palms or soles during treatment and for 1 week after treatment.
• Use an alcohol-free moisturizer often, and do not use products with perfumes or scents.
• Do not use very hot water for baths and showers

Alopecia is when your hair gets thin, brittle (breaks easily), or falls out. This may happen during the few weeks after treatment starts. Hair loss can be all of your body hair, including pubic, underarm, legs/arms, eyelashes, and nose hairs. You may want to use scarves, wigs, hats, and hairpieces. Your hair helps keep you warm in cold weather, and it can protect you from the sun, so it is important to wear a hat if you are in cold weather or in the sun. If you are going to be out in the sun, protect your scalp by using a sunscreen with SPF 30 or higher. Wash your scalp with a mild or baby shampoo. After you are done with treatment, hair often starts to grow back.

Talk to your providers if you have nausea and/or vomiting. They can prescribe medications to help you. Making changes to your diet can also help. Avoid things that make your symptoms worse, like heavy or greasy/fatty foods and spicy or acidic foods, like tomatoes, lemons, and oranges. Try saltines or ginger ale to help your symptoms.  

Call your providers if you cannot keep fluids down for more than 12 hours or if you feel lightheaded or dizzy.

You may have joint or muscle pain/aches and headaches while taking this medication. Your provider can recommend medications and other ways to help relieve your pain.