Let's take a minute to talk about your medication.  

This is Fluorouracil. It helps to treat certain skin conditions like actinic keratosis. This condition is usually caused by years of sun exposure. These lesions are treatable but can lead to certain types of skin cancers. Fluorouracil may have other uses, too.  

Fluorouracil is applied topically to the affected area of skin. Fluorouracil is a cream that is available in different strengths. Your doctor will determine how long you should use this medicine and which strength is right for you. You should use it exactly as your doctor tells you to. You should also read the 'Instructions for Use' for full information. If you still have questions, your doctor or pharmacist can help. 

Most patients that use this medicine will get skin irritation. This can include redness, burning, and itching. Some patients will have swelling and a loss of the upper layer of skin. Irritation can continue for 2 weeks after you stop applying the cream. If possible, you should try to avoid using this medicine on skin that gets a lot of sun. Be sure to protect the treated skin with sunscreen and protective clothing. Also, you should not use tanning beds or sunlamps. If these or other side effects become reasons you want to stop taking this medicine, please talk to your doctor or pharmacist.  

As with any medicine, rare but serious side effects could occur. You should read the Patient Information Sheet to know which symptoms to watch for and when to report changes. 

Women should check with their doctors before becoming pregnant and before breastfeeding.

Fluorouracil can interact with other medicines. You should always check with your doctor or pharmacist before taking or using other medicines. 

For best results with Fluorouracil, follow the 'Instructions for Use,' and continue to follow up with your skin doctor.