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ZDS-Liothyronine: Uses, Side Effects and Dosage

Updated:
Facts
Status:
Prescription (Rx)
Strength:
5 mcg, 25 mcg

Patient Medication Information: uses, side effects, how to take - ZDS-Liothyronine

ABOUT THIS MEDICATION

What the medication is used for

ZDS-Liothyronine (liothyronine sodium) is used for the treatment of:

  • Mild to severe hypothyroidism (thyroid gland does not produce enough hormone);
  • Enlarged thyroid gland (simple goiter)

What it does

ZDS-Liothyronine (liothyronine sodium) is a synthetic form of a hormone produced by the thyroid gland called triiodothyronine.

When it should not be used

ZDS-Liothyronine should not be used if you have:

  • a hypersensitivity or allergy to thyroid hormones (liothyronine sodium) or to any non-medicinal ingredients in ZDS-Liothyronine;
  • uncorrected adrenal gland under-activity;
  • acute myocardial infarction (heart attack)

What the medicinal ingredient is

Liothyronine sodium

What the non medicinal ingredients are Calcium sulfate dihydrate, corn starch, gelatin, stearic acid, sucrose and talc.

What dosage form it comes in

ZDS-Liothyronine is available as follows:

5 mcg: White to off white, round, flat faced beveled edge, uncoated tablets, debossed with ‘582’ on one side and plain on the other side.

25 mcg: White to off white, oval shaped, uncoated tablets, debossed with ‘583’ on one side and scored on the other side.

WARNINGS AND PRECAUTIONS

Serious Warnings and Precautions

ZDS-Liothyronine, like other thyroid hormones, should not be used for the treatment of obesity or for weight loss, either alone or with other medicines. At normal doses, ZDS-Liothyronine does not reduce body weight and at higher doses, it can produce serious or even life-threatening side effects.

BEFORE or WHILE YOU USE ZDS-Liothyronine, talk to your doctor if you have the following condition:

  • any heart problems, such as a heart attack, angina pectoris (chest pain)
  • a history problem with thyroid (myxedema), or adrenal or pituitary gland
  • kidney disease
  • high blood sugar (diabetes)
  • decreased development of sexual organs (hypogonadism)

IMPORTANT: PLEASE READ

  • bone thinning (osteoporosis)
  • pregnant or planning to become pregnant

  • breast feeding
  • blood clotting problem

Before or while you use ZDS-Liothyronine tell your doctor or pharmacist about all other medications you take including medications that you bought without a prescription, vitamins, and natural products. Particularly if you are taking the following:

  • Blood thinner (anticoagulants)
  • Medications for high cholesterol levels such as lovastatin, cholestyramine, clofibarate
  • Medications for high blood sugar or insulin
  • Medications that contain estrogen such as birth control pills
  • Amiodarone
  • Medicines that contain iodine such as radiographic contrast agents
  • Heroin/methadone
  • 5-fluorouracil, mitotane, tamoxifen
  • Tricyclic antidepressant such as imipramine
  • Digoxin (digitalis)
  • Cyokines such as interferon-alpha, interleukin-2
  • Growth hormones
  • Ketamine
  • Theophylline
  • Diazepam
  • Ethionamide
  • Metoclopramide
  • Perphanazine
  • Resorcinol (topical products)
  • Para-aminosalicylate sodium

    Some medicines may interfere with blood tests done to determine thyroid hormone levels (thyroid function tests). It is important to inform your doctor of all medicines you are taking before and at the time of blood tests.

    The following drugs are known to interfere with laboratory tests performed in patients on thyroid hormone therapy:

    • Androgens (male hormones)
    • Corticosteroids (eg., prednisone, dexamethasone)
    • Estrogens and estrogen-containing oral contraceptives (birth control pills)
    • Preparations containing iodine
    • Salicylates (eg., aspirin)

PROPER USE OF THIS MEDICATION

You should take ZDS-Liothyronine as prescribed by your doctor. Treatment is usually started with a low dose of ZDS-Liothyronine, then increased gradually according to your response.

Overdose

If you think you, or a person you are caring for, have taken too much ZDS-Liothyronine, contact a healthcare professional, hospital emergency department, regional poison control centre or Health Canada's toll-free number, 1-844 POISON-X (1-844-764-7669) immediately, even if there are no signs or symptoms.

Missed dose

If you miss a dose, take it as soon as you remember on the same day. Skip that dose if you do not remember until the next day.

INTERACTIONS WITH THIS MEDICATION

IMPORTANT: PLEASE READ

SIDE EFFECTS AND WHAT TO DO ABOUT THEM

Side effects with ZDS-Liothyronine may include symptoms of hyperthyroidism as follows: Headache, excessive sweating, fatigue, increased appetite, weight loss, fever, nervousness, anxiety, irritability, insomnia, cardiac arrhythmias (heartbeats which are irregular or too fast), angina pectoris (chest pain), diarrhea and menstrual irregularities.

Tell your doctor about any other side effect that is not included above or if you have any question. Your doctor may ask you stop taking ZDS-Liothyronine until the symptoms disappear, and re-start after one or two days at a lower dose.

HOW TO STORE IT

Store at room temperature (15-30°C), away from heat, light and moisture.

Keep out of reach and sight of children.

Reporting side effects

You can report any suspected side effects associated with the use of health products to Health Canada by:

  • Visiting the Web page on Adverse Reaction Reporting (canada.ca/drug-device-reporting) for information on how to report online, by mail or by fax; or
  • Calling toll-free at 1-866-234-2345.

NOTE: Contact your healthcare professional if you need information about how to manage your side effects. The Canada Vigilance Program does not provide medical advice.

MORE INFORMATION

  • Talk to your healthcare professional
  • Find the full product monograph that is prepared for healthcare professionals and includes this Consumer Information by visiting the Health Canada website: https://www.canada.ca/en/health-canada/services/drugs-health-products/drug-products/drug- product-database.html; or by calling 1-877-716-5599.

Manufacturer :

Zydus Lifesciences Ltd.

Ahmedabad-382213, India.

Importer / Distributor :

Zydus Pharmaceuticals (Canada) Inc.

ON L4W 5K4.

Last revised: OCT 3, 2025

About this document

Source: Health Canada – Drug Product Database (DPD) and product monographs · DIN (Drug Identification Number): 02561298

Revision date stated in the text: October 3, 2025

Found a mistake? Write to us via the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Drug information for ZDS-Liothyronine

Rx or OTC
Prescription (Rx)?
DIN 02561298, 02561301
Schedule(s) PRESCRIPTION
Active ingredient(s) Liothyronine (liothyronine sodium)
Dosage form(s) Tablet
Route(s) of administration Oral
Drug class (WHO ATC)
  1. H Systemic hormonal preparations, excl. sex hormones and insulins
    1. H03 Thyroid therapy drugs
      1. H03A Thyroid preparations
        1. H03AA Thyroid hormones
          1. H03AA02 Liothyronine sodium
Company ZYDUS LIFESCIENCES LIMITED
Current status Marketed
Current status date January 15, 2026
Strengths and forms
DIN Strength Dosage form(s) Current status
02561298 5 MCG Tablet Marketed January 15, 2026
02561301 25 MCG Tablet Marketed January 15, 2026

Source: Health Canada – Drug Product Database (DPD) and product monographs, data as of November 1, 2026. Data from the Health Canada Drug Product Database, as published there. Not a substitute for the advice of a doctor or pharmacist.