 <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]  advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.The precautions of Malathion Topical: Before using malathion, tell your doctor or pharmacist if you are allergic to it; 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. Before using this medication, tell your doctor or pharmacist your medical history, especially of: asthma, skin infections, skin or scalp problems (such as psoriasis, eczema), open sores/wounds on the scalp (such as minor cuts, scrapes). Constant or forceful scratching of the scalp may lead to a bacterial skin infection. Tell your doctor right away if you develop worsening redness or pus. During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor. If you are pregnant and applying this medication on another person, handle it with care. It is unknown if this drug passes into breast milk. Consult your doctor before breast-feeding.The interactions of Malathion Topical: Drug interactions may change how your medications work or increase your risk for serious side effects. This </s>