 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST]  if you are allergic to it; or to other allylamine antifungals (such as naftifine); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details. If you have any health problems, consult your doctor or pharmacist before using this product. During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor. It is unknown if this drug passes into breast milk when applied to the skin. Other forms of this medication pass into breast milk when taken by mouth. Consult your doctor before breast-feeding.The interactions of Terbinafine HCl Topical: Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval. Does terbinafine HCl topical interact with other drugs you are taking? Enter your medication into the WebMD interaction checker Check Interaction </s>