While some formulations of Voltaren gel can be available without a prescription ... A smaller amount of diclofenac from Voltaren gel gets into the bloodstream compared to oral forms of diclofenac.

Diclofenac sodium 3%; gel; contains benzyl alcohol. Use lowest effective dose for shortest duration. Apply to lesions twice daily for 60–90 days. Use 0.5g (pea size amount) on each 5cm×5cm ...

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.