Definition: A white crystalline substance used as a local anesthetic, especially in eye surgery.

Example: The doctor applied phenacaine to numb the area before the procedure.

Definition: A white crystalline substance that was once used to relieve pain and reduce fever, but is no longer used due to harmful side effects.

Example: Phenacetin was commonly prescribed in the past, but it has been banned in many countries due to safety concerns.

Definition: A synthetic drug used mainly in veterinary medicine as an anesthetic, but also misused as a hallucinogen.

Example: Phencyclidine is sometimes referred to as PCP and is known for its hallucinogenic effects.

Definition: A type of drug that stimulates the central nervous system and is used to increase alertness and energy.

Example: The doctor prescribed phenmetrazine to help the patient manage their weight.

Definition: A type of medication that is used to help people sleep, reduce anxiety, and control seizures.

Example: The doctor prescribed phenobarbital to help manage the patient's epilepsy.

Definition: A medication used to treat seizures and as a sedative, belonging to a class of drugs known as barbiturates.

Example: The doctor prescribed phenobarbitone to help control the patient's seizures.

Definition: A chemical compound used in medicines and agriculture, particularly for treating mental health issues and as an insecticide.

Example: The veterinarian prescribed phenothiazine to treat the animal's parasitic infection.

Definition: A medication that helps reduce hunger by changing how the body processes certain chemicals in the brain, often used to help people lose weight.

Example: The doctor prescribed phentermine to assist with her weight loss plan.

Definition: A type of medication that blocks certain receptors in the body, often used to help diagnose and treat a specific type of tumor that affects blood pressure.

Example: The doctor prescribed phentolamine to help manage the patient's high blood pressure caused by a tumor.

Definition: A necessary building block for proteins that the body cannot produce on its own, found in many foods and important for growth and health.

Example: Phenylalanine is found in high-protein foods like meat, fish, eggs, and dairy products.