Barbiturates
Also known as: Phenobarbital, Pentobarbital, Thiopental, Methohexital
Barbiturates are a family of medications used in veterinary medicine for various reasons, including controlling seizures, inducing anesthesia for surgery, or for humane euthanasia. * **Monitoring**: If your pet is prescribed a barbiturate for long-term use (such as phenobarbital for epilepsy), regular blood tests will be required to monitor liver function and ensure the drug levels in the blood are safe and effective. * **Side Effects**: You may notice lethargy, increased thirst, or increased appetite when your pet first starts taking these medications. * **Safety**: These are strictly controlled prescription medications. Keep them securely stored away from children and other pets. Never change the dose without consulting your veterinarian. > **Important**: If your pet appears excessively sleepy, has difficulty breathing, or is uncoordinated, contact your veterinarian immediately.
Dosage must be set by your veterinarian for your specific pet. Never give human medication or another pet’s prescription without veterinary guidance.
What it is used for
How it is given
Possible side effects
- Dose-dependent respiratory depression
- Cardiovascular depression (hypotension, decreased contractility)
- Paradoxical excitement
- Hypothermia (at anesthetic doses)
- Decreased gastrointestinal motility
Cautions & contraindications
- Use with extreme caution in cats due to high sensitivity to respiratory depressant effects
- **Species Sensitivity**: Must be used very cautiously in cats, as they are particularly sensitive to the respiratory depressant effects of barbiturates. **Organ Function**: Severe renal impairment may occur secondary to hypotensive effects in overdose situations. Extended use induces hepatic microsomal enzymes, which can alter the metabolism of concurrently administered medications. **Respiratory/Cardiac Arrest**: Respiratory arrest may occur at doses four times lower than those that cause cardiac arrest.
Frequently asked questions
What is Barbiturates used for in pets?
Barbiturates are a family of medications used in veterinary medicine for various reasons, including controlling seizures, inducing anesthesia for surgery, or for humane euthanasia. * **Monitoring**: If your pet is prescribed a barbiturate for long-term use (such as phenobarbital for epilepsy), regular blood tests will be required to monitor liver function and ensure the drug levels in the blood are safe and effective. * **Side Effects**: You may notice lethargy, increased thirst, or increased appetite when your pet first starts taking these medications. * **Safety**: These are strictly controlled prescription medications. Keep them securely stored away from children and other pets. Never change the dose without consulting your veterinarian. > **Important**: If your pet appears excessively sleepy, has difficulty breathing, or is uncoordinated, contact your veterinarian immediately.
Is Barbiturates safe for my pet?
Dosage must be set by your veterinarian for your specific pet. Never give human medication or another pet’s prescription without veterinary guidance.
This article is for general education and is not a substitute for professional veterinary advice. If your pet is unwell, please consult a veterinarian.
Worried about your pet?
Peqaboo’s AI helps you track symptoms, understand lab reports, and know when to see a vet.
Get the Peqaboo app