Homeopathy is a form of alternative medicine that has been practiced for over 200 years. It is based on the principle of "like cures like," which means that a substance that causes symptoms in a healthy person can be used to treat similar symptoms in a sick person.
Viagra is a medication used to treat erectile dysfunction, a condition characterized by the inability to achieve or maintain an erection sufficient for sexual intercourse.
Paracetamol is a medication that belongs to a class of drugs known as analgesics (pain relievers) and antipyretics (fever reducers). It is commonly used to alleviate mild to moderate pain, such as headaches, toothaches, and muscle aches, as well as to reduce fever.
Vaccines are biological preparations that stimulate the immune system to produce an immune response against specific pathogens, such as bacteria or viruses.