SIDE EFFECTS: See also Warning section. Upset stomach, nausea, heartburn, diarrhea, constipation, gas, headache, drowsiness, and dizziness may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.

Does Voltaren Rapid make you drowsy?

As with other NSAID medicines, Voltaren Rapid 25 may cause dizziness, drowsiness or blurred vision in some people. If you have any of these symptoms, do not drive or do anything else that could be dangerous.

How quickly does Voltaren work?

How long does Voltaren take to work? Voltaren contains an effective nonsteroidal anti-inflammatory medicine which is clinically proven to relieve arthritis joint pain. With 4-times-a-day use, you may start to feel relief within a few days. You should feel significant pain relief within 7 days of continuous use.