Paracetamol, also known as acetaminophen, is a medication used to treat pain and fever. It is typically used for mild to moderate pain relief. Evidence is mixed for its use to relieve fever in children. It is often sold in combination with other medications, such as in many cold medications.

Papaverine is an opium alkaloid antispasmodic drug, used primarily in the treatment of visceral spasm and vasospasm and occasionally in the treatment of erectile dysfunction. It is used in the treatment of acute mesenteric ischemia.

Paclitaxel is a chemotherapy medication used to treat a number of types of cancer. This includes ovarian cancer, breast cancer, lung cancer, Kaposi sarcoma, cervical cancer and pancreatic cancer.

Potassium guaiacolsulfonate is an expectorant. It works by thinning mucus (phlegm) in the lungs, making it less sticky and easier to cough up. This reduces chest congestion by making coughs more productive.