Stanozolol for Dogs, Cats and Horses

Dosage Forms Available:

  • Capsules
  • Oral Liquid
  • Transdermal Gel
  • Injection


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Stanozolol is a hormone used in veterinary medicine to help animals gain weight, build muscle and create red blood cells.

What is Stanozolol?

Stanozolol is a prescription medication. It is a controlled substance and can only be obtained from a veterinarian with an approved DEA license. 

Stanozolol is an anabolic steroid used to promote the buildup of body tissues and increase the production of red blood cells. 

What is Stanozolol Used for in Dogs, Cats and Horses?

Stanozolol is primarily used to improve appetite and weight gain, and increase strength and vitality in ailing animals.

In some cases, Stanozolol has shown to be effective in the treatment and management of tracheal collapse in dogs.

Stanozolol has also been used to treat anemia of chronic disease. Stanozolol requires a prescription from your veterinarian.

Stanozolol Side Effects in Dogs, Cats and Horses

While generally safe and effective when prescribed by a veterinarian, Stanozolol may cause unwanted side effects in some animals.

Common Side Effects 

  • Fluid and electrolyte retention
  • Behavioral changes

Less Common Side Effects

  • Liver damage
  • Reproductive abnormalities

If you notice any of these Stanozolol side effects in dogs, cats or horses, contact your veterinarian right away. In the event of an allergic reaction, seek immediate medical attention for your animal.

Stanozolol Precautions

Stanozolol may not be the best treatment for all veterinary patients.

Who Should Not Use Stanozolol?

  • Pregnant animals
  • Breeding Studs or Stallions

Are There Any Drug Interactions with Stanozolol?

Use extreme caution in use of cats as Stanozolol carries a high potential for hepatoxicity in this species.

Tell your veterinarian if your pet is also being given anticoagulants (Heparin, Warfarin), corticosteroids, or insulin. 

Talk to your veterinarian before giving any prescription or over the counter medicines, including vitamins and minerals. 

Are There Any Risk Factors Associated with This Medication?

Stanozolol may cause unwanted side effects in some animals. It should not be used in animals with known hypersensitivity or allergy to Stanozolol.

Reproductive abnormalities are potential. Prolonged use has been associated with behavioral changes.

Talk to your veterinarian about any side effect that seems unusual or bothersome to the animal. 


Stanozolol capsules are best stored in a cool dry place. Capsules should be in a tightly sealed container and kept away from direct sunlight.

Transdermal Stanozolol should also be stored at room temperature. As should oral liquids and injectable Stanozolol. Shake well before administering these dosage forms.

Medications should not be ingested by humans. In homes with children, a childproof container kept out of reach is highly recommended. If a human accidentally swallows this medication, call your doctor right away. Pregnant women should handle this drug with caution.

Being a controlled substance, it is against federal law to use, give away or sell this medication to others than for whom it was prescribed.


Give this medication exactly as directed by your veterinarian. If you do not understand these directions ask the veterinarian to explain them to you. 

The duration of use depends on the condition being treated, response to the medication and development of any adverse effects. 

The injectable suspension is generally recommended to be dosed on a weekly basis in both small animals and horses. 

Store Stanozolol at room temperature away from moisture and light.

Be certain to complete the prescription unless specifically directed by your veterinarian. 

Even if the animal feels better, the entire treatment plan should be completed to prevent relapse or the development of resistance.

Timeline Tips

  • Follow your veterinarian’s instructions as they may differ from these recommendations.


  • Finish the package and administer all doses. Don’t cease medication until your veterinarian has instructed.

Stanozolol for Dogs and Cats Dosage

For small dogs and cats, dose 1 to 2 mg orally twice daily or 25 mg injected intramuscularly once weekly. 

For larger dogs, the dose is 2 to 4 mg orally twice daily or 50 mg injected intramuscularly once weekly.

Treatment should continue for several weeks, depending on the response and condition of the animal.

For the treatment of tracheal collapse in dogs, the dose is 0.075 mg per pound orally every 12 hours for 2 months then tapered for 15 days.

Stanozolol for Horses Dosage 

For horses, dose 25 mg per 100 pounds of body weight injected intramuscularly once weekly for up to and including 4 weeks.

Always follow your veterinarian’s directions exactly.

Missed Dose

To maintain the effectiveness of the medication, be careful not to miss a dose, and have the refill on the way before you run out.

In the case of a missed dose, keep up the regular schedule whenever possible. Skip the missed dose if it’s almost time for the next dose, then keep with the regular schedule. Doubling up is not advised.

Stanozolol Overdose 

Poisoning can result in sodium and water retention. Treat supportively and monitor liver functions should an inadvertent overdose be administered.


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