FDA Approved Thyro-Tabs for Dogs With Hypothyroid

Until recently, there were a variety of levothyroxine medications on the market for dogs with hypothyroidism. The U.S. Food and Drug Administration issued warning letters to 6 manufacturers of unapproved levothyroxine products, which had not been reviewed for safety and efficacy by the FDA. The manufacturers were warned to stop production and marketing of the products. Because of this, Thyro-Tabs Canine is the only FDA approved drug for hypothyroidism in dogs and is currently the only medication available. Letters were issued to the manufacturers of Thyrosyn, Soloxine, Levocrine, Thyromed, Thyroid Chewable Tablets, Thyrokare, Thyroxine L, Thyrovet, Leventa. More information about the FDA and the letters can be viewed on their website.
Thyro-Tabs Canine is manufactured by Lloyd, and is a levothyroxine medication.

Visit VetRxDirect for Thyro-Tabs Canine Levothyroxine

Thyro-Tabs For Dogs

Levothyroxine is a replacement for the hormone T-4, which is naturally produced in the body by the thyroid gland to regulate metabolism and energy. When the body is unable to produce enough thyroid hormone on its own because of an imbalance, an enlarged thyroid gland, or other medical conditions and treatments, it is called hypothyroidism. Hypothyroidism in dogs can be found with a blood test or by signs and symptoms involving metabolism, energy, nerve and muscle function, skin and haircoat. Veterinarians often prescribe levothyroxine for dogs with hypothyroidism for hormone replacement. You can find more information about Thyro-Tabs by the FDA and can find it available on the VetRxDirect website. 


Hypothyroidism in Dogs: What to Look For

One day you notice it: your furry companion is a little less furry and a little less companionate. In fact, he seems pretty “down” and lethargic.  That combination of symptoms might point to a common clinical condition called hypothyroidism.

The thyroid gland, located in your dog’s neck, produces hormones that control key bodily functions including metabolism, growth, reproduction, oxygen consumption and immunity. If the butterfly-shaped thyroid doesn’t function well – or stops working all together – your dog can suffer from a variety of symptoms that can harm your dog’s health and reduce his quality of life. (The condition is relatively rare in our feline friends who are more susceptible to hyperthyroidism.)

What types of dogs get hypothyroidism?

Larger dogs that are between 4-10 years old are more prone to the condition. Some breeds are more likely to have hypothyroidism including: Doberman pinchers, Golden retrievers, Great Danes, Irish Setters and Airedale terriers.

What are the causes of hypothyroidism in dogs?

Changes in the thyroid gland can cause hypothyroidism. In some cases, an immune system disorder attacks the gland causing it to overproduce thyroid hormone and then become totally depleted. In other cases, age and biological processes stop the thyroid gland from producing enough hormones.

What are the symptoms of hypothyroidism?

Look for a combination of these symptoms:

  • Thinning or loss of fur on the trunk of the body
  • Thickening, darkening skin
  • Weight gain
  • Lethargy
  • Mood changes – depression, aggression and anxiety

Blood work is required to diagnose the condition and determine what level of treatment is required.

Popular Brands of Levothyroxine for Hypothyroidism in Dogs

How is hypothyroidism in dogs treated?

Dogs with hypothyroidism require hormone replacement therapy for the remainder of their lives. Fortunately, there are many excellent hormone replacement medications that regulate canine hormone levels and help the body function normally. We stock many of the leading thyroid medications.

As always, the first person you should talk to about your pet’s condition and any required treatments is your veterinarian.

If you’d like to read more about hypothyroidism, check out this comprehensive article by researchers at Washington State University.

Thank you for reading. We’re here to help you keep your pet healthy and happy!


What is Hypothyroidism in Dogs

Hypothyroidism in Dogs

Located in the throat bellow the larynx, the function of the thyroid is to produce hormones that regulate the metabolism. When the endocrine organ fails to deliver the necessary hormones to the body, whether because of old age or atrophy, the patient will most likely suffer a series of unpleasant symptoms. The condition is quite common in man’s best friend, the humble canine.

The chronic disease is most frequently seen in large, middle-aged dogs of any breed. However, a few of the larger breeds, such as Sheepdogs, Golden Retrievers, and Irish Setters are disproportunately affected by it. Let us take a moment to review the most common symptoms of the disorder.

Most dogs that are diagnosed with hypothyroidism suffer from one or more of the following symptoms:

  • Lethargy and listlessness
  • Mental dullness
  • Unexplained weight gain
  • Excessive shedding
  • Dandruff
  • Oily skin
  • Frequent ear infections
  •  Extreme sensitivity to the cold
  • Pimples or acne

In some cases the dog’s gastrointestinal, neuromuscular, cardiovascular systems may be compromised, which increases the risk of the following symptoms:

  • Constipation
  • Anemia
  • Infertility
  • Poor coordination
  • Diarrhea
  • Seizures
  • Irregular heart rhythms (arrhythmias)

Risk Factors of Hypothyroidism in Dogs

As we mentioned, hypothyroidism occurs most often in middle-aged, larger dogs, but it may also strike canines that are of medium size. It can and often does result in behavioral changes and a decline in physical activity. There is no known cure for the chronic condition, which means it will affect a pooch for his entire life. If you observe any of the aforementioned symptoms, it is imperative that you take him to see his veterinarian.

Diagnosis of Hypothyroidism in Dogs

Because there are so many symptoms that are common to other diseases, it can be difficult for even an experienced veterinarian to diagnose the disease. The most effective way to make the correct diagnosis is with blood screening and a full physical. All dogs that suffer from hypothyroidism have depressed hormone levels. That said, a low-normal level does not necessarily mean that your dog has the disease, which means he should not be treated for it.  Overtreatment and improper diagnoses are not at all uncommon.

Treatment of Hypothyroidism in Dogs

Although it is a permanent condition, hypothyroidism can be managed effectively with thyroid hormone replacement therapy. Most dogs respond well to the treatment and are able to lead healthy, happy and full lives, as long their owners provide daily medications and closely monitor their pet’s appearance and behavior.

Medications for Hypothyroidism in Dogs

Soloxine® Tablets

soloxine, levothyroxine for hypothyroidism in dogs

Soloxine is available at VetRxDirect.

A popular prescription medication prescribed specially for hypothyroidism in dogs is Soloxine. Sold in tablet form, levothyroxine directly treats the problem of the disease, i.e., low thyroid levels.  Dog owners must remember to always read the label carefully and to administer Levothyroxine as directed by their veterinarian.

Canine Thyroid Chewables

Because most dogs like to chew on things, Levothyroxine is also available in chewable tablets. Safe for dogs of all ages and breeds, the medication must be administered at least once a day, or as prescribed by your dog’s doctor. If possible, try to give him his medication at around the same time each day. And never give him more than directed and double the dose if you happen to miss a day.

generic Levothyroxine tablets

Often the most inexpensive option, generic tablets are no different from those sold in fancy packages by major drug makers, which makes them a popular alternative. After all, hypothyroidism is permanent and when prescription levothyroxine must be administered for several years, the costs can really add up.

Where to Find Levothyroxine for Dogs?

Since it is such a common disorder, most veterinarians keep Levothyroxine on hand.  But veterinarian’s don’t normally offer deep discounts or have sales.

Properly licensed and accredited online pet pharmacies in the U.S. can legally sell and ship medications to your door. All they need is a prescription from your veterinarian after you order your pet’s medication online.