Back pain after using Levitra or Cialis is a possible side effect attributed to the medications' effects on blood flow and 레비트라 부작용 smooth muscle relaxation. These drugs can lead to changes in vascular dynamics, potentially causing discomfort in the back or muscles.
Additionally, the relaxation of muscles may lead to altered postures or strain during sexual activity, contributing to back pain. If back pain is persistent or severe, it's advisable to consult a healthcare professional.