Thyrox-50 Levothyroxine Sodium 50 mcg Tablets
Thyrox-50 is a prescription thyroid hormone replacement medicine manufactured by Macleods Pharmaceuticals. Each tablet contains 50 mcg of levothyroxine sodium, a synthetic version of thyroxine (T4), the hormone normally produced by the thyroid gland.
Levothyroxine is used in managing hypothyroidism, a condition where the thyroid gland does not produce sufficient thyroid hormone.
Thyrox-50 Product Specifications
| Specification | Details |
|---|---|
| Product name | Thyrox-50 |
| Generic ingredient | Levothyroxine sodium |
| Also known as | Thyroxine sodium |
| Tablet strength | 50 mcg (0.05 mg) |
| Manufacturer | Macleods Pharmaceuticals |
| Dosage form | Oral tablet |
| Available quantities | 100, 200 and 300 tablets |
| Prescription | Required |
What Is Levothyroxine Sodium?
Levothyroxine sodium is a synthetic form of the thyroid hormone T4. Thyroid hormones are involved in regulating metabolism, body temperature, energy use and other normal physiological functions.
Levothyroxine replacement therapy is used when the body cannot produce sufficient thyroid hormone. The appropriate dose and formulation depend on the individual patient’s diagnosis, laboratory results and clinical response.
Levothyroxine for Dogs: Important Veterinary Information
Dogs can develop hypothyroidism when their thyroid gland produces insufficient thyroid hormone.
Common signs may include:
- Reduced energy or unusual tiredness
- Unexplained weight gain
- Hair thinning or hair loss
- Dry or abnormal skin and coat
- Reduced tolerance to cold temperatures
These symptoms can also occur with other diseases. A veterinarian must confirm the diagnosis through appropriate examination and testing.
In the United States, FDA-approved canine levothyroxine products include Thyro-Tabs Canine and ThyroKare. Veterinary formulations have their own prescribing instructions and monitoring requirements.
Thyrox-50 is a human-market levothyroxine product. It must not be represented as equivalent to an FDA-approved canine formulation or substituted for a prescribed veterinary medicine without professional authorization.
Available Tablet Quantities
MomasPets currently lists three purchase quantities:
- 100 tablets
- 200 tablets
- 300 tablets
Each tablet contains 50 mcg of levothyroxine sodium. Select the required quantity using the product options above. Packaging configuration and prescription verification requirements should be confirmed before fulfillment.
Prescription, Dosage and Monitoring
Levothyroxine is a prescription medicine. The correct dosage depends on the patient and the particular formulation.
For dogs diagnosed with hypothyroidism, a veterinarian determines the appropriate medication and treatment schedule. Thyroid blood tests and clinical monitoring help assess treatment response and the need for dosage adjustments.
Do not calculate a dose using a general online dog-weight table. Do not switch between levothyroxine formulations, split tablets, or change treatment without the prescribing veterinarian’s instructions.
Side Effects and Precautions
Excess thyroid hormone exposure in dogs can cause symptoms including:
- Restlessness or unusual nervousness
- Excessive thirst or urination
- Increased heart rate
- Panting
- Vomiting or diarrhea
- Weight loss despite increased appetite
Contact a veterinarian promptly if these symptoms occur during thyroid treatment.
Particular caution is required for dogs with certain underlying medical conditions, including heart disease or adrenal disorders.
Product Storage and Handling
Store according to the manufacturer’s packaging instructions. Keep tablets in their appropriate container, protected from unsuitable storage conditions and out of reach of children and animals.
Ordering Information
Review the product name, active ingredient, tablet strength and selected quantity before proceeding. Prescription verification and fulfillment remain subject to applicable requirements.
For US orders, MomasPets generally communicates an estimated delivery window of 10–15 days, subject to the order’s eligibility and confirmed shipping arrangements.







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