Propylthiouracil Tablets

Antithyroid drugs. Its mechanism of action is to inhibit thyroid peroxidase, thereby preventing the iodination of tyrosine and the condensation of iodinated tyrosine in the thyroid gland, thereby inhibiting the synthesis of thyroxine. At the same time, it inhibits the conversion of T4 to T3 in peripheral tissues, causing the content of more active T3 in serum to decrease rapidly.

Propylthiouracil. Its chemical name is: 6-propyl-2-thio-2,3-dihydro-4 (1H) pyrimidinone. Its structural formula is: Molecular formula: C7H10N2OS Molecular weight: 170.24.

This product is white tablets; bitter taste.

It is used for various types of hyperthyroidism, especially for: 1. Patients with mild disease and mild to moderate thyroid enlargement; 2. Adolescents, children and elderly patients; 3. Patients with recurrence after thyroid surgery who are not suitable for radioactive 131I treatment; 4. Pre-operative preparation; 5. As an adjuvant treatment for 131I radiotherapy.

For the treatment of hyperthyroidism in adults, the starting dose is generally 300 mg (6 tablets) per day, and the dose ranges from 150 to 400 mg (3 to 8 tablets) depending on the severity of the disease, taken orally in divided doses, with a maximum daily dose of 600 mg (12 tablets). The dose is gradually reduced after the disease is under control, and the maintenance dose is 50 to 150 mg (1 to 3 tablets) per day, adjusted according to the disease; the starting dose for children is 4 mg/kg per day, taken orally in divided doses, and the maintenance dose is reduced as appropriate. Or follow the doctor's advice.

Common symptoms include headache, dizziness, joint pain, swollen salivary glands and lymph nodes, and gastrointestinal reactions. There are also allergic reactions such as rash and drug fever. Some rashes can develop into exfoliative dermatitis. Blood counts should be checked regularly during medication. When the white blood cell count is lower than 4X109/L or the neutrophil count is lower than 1.5X109/L, the medication should be discontinued or adjusted as ordered by the doctor.

It is contraindicated for patients with severe liver damage, severe leukocyte deficiency, allergy to thiourea drugs, and breastfeeding women.

Precautions for children: Hypothyroidism should be avoided during medication for children. Precautions for pregnancy and lactation: Use with caution for pregnant women and prohibit use for lactating women. Precautions for the elderly: The dosage should be reduced for the elderly, especially those with renal impairment. If hypothyroidism is found, thyroid tablets should be added.

This product can increase the efficacy of oral anticoagulants when used in combination with them. Sulfonamides, para-aminosalicylic acid, phenylbutazone, barbiturates, phentolamine, tolazoline, vitamin B12, sulfonylureas, etc. can inhibit thyroid function and cause goiter, so be careful when using this product in combination. In addition, the intake of high-iodine foods or drugs can aggravate hyperthyroidism, increase the amount of antithyroid drugs needed or prolong the duration of medication, so avoid taking iodine before taking this product.

Keep away from light and store in sealed container.

100mg

24 months

Jinghua Pharmaceutical Group Co., Ltd.

• Founded in:

  1994-01-03

• Address:

  No. 9 Xingtai Road, Gangzha Economic Development Zone, Nantong City

• Tax NO.:

  91320600138297660P

• Registered Funds:

  814.180908 million yuan

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