Background: It has been demonstrated that aromatase inhibitors (AIs) are more effective than tamoxifen in reducing breast cancer recurrence. However, despite the excellent results, the side effects associated with them cause between 24.5 and 31.3% therapy abandon. This study aimed to verify the effectiveness of Neuromuscular Taping (NMT) in the treatment of myalgia and arthralgia induced by AIs in women who have had breast cancer. Our goal is to improve their pain, decreasing by 20% the values of their Visual Analogue Scale (VAS) at various points in order to improve symptoms and increase adherence.