This product contains arnica and devil's claw, which are natural ingredients known for their muscle relaxant properties. However, it is important to take some precautions when using this muscle gel. Before application, make sure you do not have any open wounds or irritated skin in the area of application. Avoid contact with eyes and mucous membranes. If you experience any allergic reaction or irritation, discontinue use and consult a doctor. Remember that this product is for external use only and should not be swallowed. If you have a medical condition or are taking other medications, it is advisable to consult a health care professional before using this product.