In life, it is often inevitable to have some pain here and there. Some people who clearly know the cause of the pain may choose to buy some over-the-counter (OTC) painkillers in pharmacies. The efficacy of these drugs is relatively certain, the adverse reactions are rare or mild, and they can be obtained without prescription. So how should OTC painkillers be correctly selected and used? Common Pain in Life and Its Treatment Headache There are many causes of headache, which are generally temporary. Occasionally paracetamol or ibuprofen can be used for headache. Quiet and dark rooms can also help relieve headache. If headaches are very frequent, or worsen gradually, or accompanied by other symptoms (fever, weakness, etc.), you should see Read More …