Let's take a minute to talk about your medication.   This is Diclofenac 1% gel. It helps to treat pain caused by osteoarthritis of the joints, such as the hands and knees. It may have other uses, too.  Diclofenac is applied topically to the affected area of skin. It is often used up to four times per day. You should use it exactly as your doctor tells you to. Always use the dosing card provided to measure the dose. You should read the 'Instructions for Use' for full information. If you still have questions, your doctor or pharmacist can help. Most people tolerate this medicine well. The most common side effect is skin irritation. This is normal if it is mild and should go away. 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. With Diclofenac, this includes an increased risk of stomach and heart problems. You should read the Medication Guide to know which symptoms to watch for and when to report changes. Women should check with their doctors before becoming pregnant and before breastfeeding. Diclofenac can interact with other medicines. You should always check with your doctor or pharmacist before taking or using other medicines. Diclofenac can make your skin sensitive to sunlight. You should protect your skin and limit your time in the sun. For best results with Diclofenac, follow the 'Instructions for Use,' and work with your doctor to use the lowest dose that controls your pain.