The Therafoot Pro Ems Foot Massager is designed to provide relief and relaxation for tired feet. However, like any device that utilizes electrical muscle stimulation (EMS), it’s essential to be aware of potential side effects. Users may experience mild discomfort during use, particularly if they have sensitive skin or specific health conditions.

Common side effects reported include temporary tingling sensations and mild muscle soreness. These effects typically subside shortly after the session ends. It's crucial to follow the manufacturer's usage guidelines and consult with a healthcare professional, especially if you have underlying health issues or are pregnant.

Some individuals may also experience skin irritation or allergic reactions, depending on their skin type and sensitivity to the materials used in the device. If you notice any unusual symptoms, it's advisable to discontinue use and seek medical advice.