How Long Does THC Toxicity Last in Dogs?

       Article reviewed for Accuracy by Dr. Rida Asrar.

As cannabis products become more widely available, pet owners may find themselves facing a situation they never expected: their dog accidentally ingesting THC (tetrahydrocannabinol), one of the psychoactive compounds in marijuana. So, understanding the symptoms, duration, and treatment for THC toxicity in dogs is crucial for pet owners who wants to ensure their furry friends safe.

What Causes THC Toxicity in Dogs?

THC  is the active component in marijuana. Dogs are more sensitive to THC than humans due to metabolic differences and the structure of their endocannabinoid system. THC toxicity occurs when dogs consume marijuana directly in the form of edibles, dried cannabis, or discarded joints.

Edibles are especially prone to accidental ingestion as they frequently contain other appealing ingredients such as chocolate or peanut butter, which can aggravate the toxicity by introducing additional dangerous substances.

Symptoms of THC Toxicity

Diagnostic signs usually appear within 30 minutes to 2 hours after ingestion. These symptoms can range from mild to severe, depending on the amount ingested and the size of the dog. Common symptoms include:

• Lethargy or excessive sedation
• Loss of coordination (shaky gait)
• Dilated pupils
• Hypersensitivity to sound or touch
• Drooling or vomiting
• Urinary incontinence
• Slow heart rate (bradycardia)
• Low body temperature (hypothermia)
• Tremors or, in severe cases, seizures

The majority of cases of THC intoxication are not lethal but the symptoms can be distressing for both dog and its owner. In rare case, extreme ingestion of THC could be life threatening

How Long Do Symptoms Last?

The duration of THC toxicity in dogs varies depending on several factors, including the amount consumed, the dog’s size, and individual metabolism. Symptoms typically last 12 to 24 hours, however in some circumstances they might linger up to 36 hours. THC’s fat-soluble nature permits it to persist in the body’s tissues for longer period.

Small dogs when consume high doses of THC, such as concentrated edibles, can experience long lasting severe symptoms. Additionally, the presence of other ingredients, like chocolate or xylitol, can exacerbate the situation and potentially prolong recovery time.

Toxicology of THC in Dogs

Understanding the toxicity of THC in dogs is essential for comprehending why they are so susceptible to its effects. THC interacts with the endocannabinoid system, which is a network of receptors that regulate physiological processes like mood, appetite, and pain. Dogs have a higher concentration of CB1 receptors in their brains than humans, making them more sensitive to THC’s intoxicating effects.

When ingested, THC is metabolized in the liver and stored in fatty tissues before being slowly released into the bloodstream. This gradual release contributes to the long-term effects of THC toxicity in dogs. Additionally, THC metabolites are excreted through urine and feces, but the process can take longer in dogs due to their slower metabolic rate.

The toxic dose of THC varies greatly with the dog’s size, age, and overall health. Even small amounts of THC can cause notable effects in dogs, with doses above 3 mg/kg potentially resulting in severe toxicity. Edibles often pose a greater risk due to their high THC concentration and other harmful ingredients.

Veterinary Treatment for THC Toxicity

Once at the veterinary clinic, your dog will most likely be examined thoroughly to assess their condition. The veterinarian may perform tests to rule out other causes of the symptoms and confirm THC toxicity.

Treatment is usually supportive and aims to manage symptoms until the dog’s body metabolizes and eliminates the THC. Common treatments include:

• Activated Charcoal: To bind any remaining THC in the stomach and prevent further absorption.
• IV Fluids: To maintain hydration and support kidney function.
• Temperature Regulation: Warming or cooling measures may be used if the dog’s body temperature is too low or high.
• Anti-nausea Medications: To reduce vomiting or excessive drooling.
• Sedatives: In some cases, mild sedatives may be used to calm hyperactive dogs.

Most dogs recover fully with appropriate care, but the recovery process may take several hours to a few days, depending on the severity of the toxicity.

Preventing THC Toxicity in Dogs

Prevention is the best way to protect your dog from THC toxicity. Here are some tips:

• Store Cannabis Products Securely: Keep all marijuana products, including edibles, oils, and plants, in secure dog-proof containers and out of their reach.
• Dispose of Waste Properly: Avoid leaving discarded joints or cannabis scraps in areas accessible to your dog.
• Educate Household Members and Guests: Ensure everyone in your home knows the risks of THC toxicity in dogs and the importance of keeping cannabis products out of reach.
• Know the Ingredients: Be mindful of edibles that contain other harmful substances, like chocolate or xylitol, which can pose additional dangers to dogs.

Conclusion

THC toxicity in dogs is a preventable but serious condition that can cause distressing symptoms and prolonged recovery times. While the symptoms usually resolve within 12 to 36 hours, timely veterinary attention is required to ensure your dog’s safety and comfort. By taking proactive measures to store cannabis products securely and staying informed about the risks, you can help safeguard your furry friend from accidental ingestion.