Definition

1. Noun:
   • A synthetic crystalline compound (C₇H₁₀N₂OS): A white, crystalline substance used as a medication.
   • An antithyroid drug: A pharmaceutical agent that inhibits the production of thyroid hormones by the thyroid gland. It is primarily used in the treatment of hyperthyroidism (overactive thyroid) and sometimes in the management of goiter (an enlarged thyroid gland).

Usage Examples

• Noun:
  • The doctor prescribed propylthiouracil to manage her hyperthyroidism.
  • Before surgery, the patient's condition was stabilized with a course of propylthiouracil.
  • Propylthiouracil works by interfering with the synthesis of thyroid hormones.

Advanced Usage

• Clinical Context: The term is used almost exclusively in medical, pharmacological, and biochemical contexts. It is often abbreviated as PTU in clinical notes and discussions.
  • PTU is sometimes preferred over other antithyroid drugs in specific clinical scenarios, such as during pregnancy.
• Mechanism of Action: Used to describe how the drug functions.
  • The primary mechanism of propylthiouracil involves the inhibition of the enzyme thyroid peroxidase.

Variants and Related Words

• PTU: The common abbreviation for propylthiouracil.
• Antithyroid drug / Thionamide: The class of drugs to which propylthiouracil belongs. Other members include methimazole.
• Goiter / Goitre: A condition of thyroid enlargement that propylthiouracil may be used to treat.
• Hyperthyroidism / Thyrotoxicosis: The medical condition (overactive thyroid) for which propylthiouracil is a standard treatment.

Synonyms

• Antithyroid agent: A general term for drugs that reduce thyroid hormone production.
• Thioamide: Refers to the chemical class of antithyroid drugs, including propylthiouracil.

Related Phrases / Compound Terms (Not Phrasal Verbs)

• Propylthiouracil therapy: The treatment regimen involving this drug.
  • The patient was started on propylthiouracil therapy.
• Propylthiouracil dosage / dose: The specific amount of the drug prescribed.
  • The propylthiouracil dosage must be carefully titrated to avoid side effects.

Notes on Usage

• Technical Term: This is a highly specialized term from medicine and pharmacology. It is not used in everyday conversation.
• Precise Meaning: It refers specifically to this chemical compound and its use as a drug. It is not interchangeable with general terms like "medicine" or "pill."
• Spelling: It is a single word. Ensure correct spelling: propylthiouracil.

Noun

1. a crystalline compound used as an antithyroid drug in the treatment of goiter