Yes, Cenforce FM 100 mg, which is a medication primarily used to treat erectile dysfunction, can cause back pain as a potential side effect, although it is not extremely common. Cenforce FM 100 mg contains sildenafil and a combination of other ingredients, such as flavonoids, which may affect the body in various ways. Some users of sildenafil (the active ingredient) have reported side effects such as headaches, dizziness, muscle pain, and back pain. The back pain may be due to the way the drug affects blood flow and muscle relaxation. If the back pain is persistent or bothersome, it’s important to consult a healthcare provider, as they can assess the situation and determine whether the medication is the cause or if another underlying condition might be responsible.