There is no definitive answer to this question as each individual's response to medication can vary. However, Voltaren (diclofenac) is a nonsteroidal anti-inflammatory drug (NSAID) commonly used to relieve pain, inflammation, and stiffness associated with arthritis, muscle aches, and menstrual cramps. It is unclear if Voltaren would be effective in treating stenosis spine pain specifically, but it may be worth trying if other pain relievers have been ineffective.