In some people, however, Voltaren gel can lead to dangerous side effects, such as heart attack, stroke, and gastrointestinal (GI) bleeding. Milder side effects have also been reported, including ...

Diclofenac sodium 1%; gel. Temporary relief of arthritis pain only in upper body areas (eg, hand, wrist, elbow) or lower body areas (eg, foot, ankle, knee). Use dosing card to apply gel.