Voltaren Emulgel Back and Muscle Pain (100 grams) – beyondRx.ca (by 99 Pharmacy)
Amazon.com: HealthCareAisle Diclofenac Gel, 1%, Arthritis Pain Relief - 100 g tube - Original Prescription Strength (NSAID) : Health & Household
Assessment of diclofenac or spinal manipulative therapy, or both, in addition to recommended first-line treatment for acute low back pain: a randomised controlled trial - The Lancet