Voltaren is the #1 doctor & pharmacist recommended topical pain reliever. Voltaren Emulgel Joint Pain Regular Strength contains a unique medicated formula that relieves pain due to recent muscle or joint injuries such as sprains, strains or sports injuries (e.g. sprain of ankle, strain of shoulder or back muscles). It’s easy open cap is especially developed for people suffering from stiff hands due to recent injuries, joint pain and joint inflammation.