Product title
Vendor
£19.99 | £24.99
Product title
Vendor
£19.99 | £24.99
Product title
Vendor
£19.99 | £24.99
Product title
Vendor
£19.99 | £24.99
Antihistamine and Appetite Stimulant Tablets for Allergies and Serotonin Syndrome in Pets
Product Description
Cyproheptadine HCl 4mg Tablets are a prescription first-generation antihistamine with antiserotonergic properties used by veterinarians for dogs and cats. Where standard antihistamines stop at histamine H1 receptors, cyproheptadine also takes on serotonin receptors in the gastrointestinal tract and central nervous system, opening up a broader range of veterinary uses. It covers allergic conditions including feline asthma and atopy, serves as an appetite stimulant for cats and dogs eating poorly, and works as an antidote for serotonin syndrome from drug toxicity or overdose. It is used entirely off-label in veterinary medicine and should be given with food.
Benefits
- Feline Appetite Stimulation: Among the most commonly reached-for appetite stimulants for cats dealing with poor food intake from illness, stress, or chronic disease.
- Allergy and Asthma Relief: Goes after allergic skin conditions, atopy, and feline bronchial asthma by getting in the way of the histamine response driving these conditions.
- Serotonin Syndrome Antidote: Steps in against dangerous serotonin toxicity by occupying serotonin receptors, playing a key role in emergency management of serotonin syndrome in pets.
- Canine Cushing's Disease Support: Brought into management protocols for pituitary-dependent Cushing's disease in dogs off-label, drawing on its antiserotonergic effects.
- Urine Spraying Reduction in Cats: Sometimes paired with other behavioral medications to help dial down stress-driven urine spraying and marking behavior in cats.
Ingredients
Active Ingredients
Cyproheptadine Hydrochloride 4mg
How to Use
Cyproheptadine HCl 4mg Tablets are a prescription-only medication. A valid veterinarian prescription is required to purchase this product.
Please follow your veterinarian's specific instructions for the dosage and administration of this medication for your pet.
Disclaimer: Dosage and administration of this medication must be determined by a licensed veterinarian. Always consult your veterinarian before administering or adjusting any prescription medication for your pet.
Tucking it into a soft pill pocket or pill wrap treat alongside a small meal is a simple way to get your pet to take their dose comfortably.
Shop Pill Pockets for Dogs | Shop Pill Pockets for Cats
Additional Information
Precautions
- Avoid With MAOIs: Pets currently receiving selegiline, amitraz, furazolidone, or isoniazid should not be given this medication due to the risk of serious MAOI-type interactions.
- Avoid in Glaucoma: Pets with glaucoma should not receive this medication, as its anticholinergic properties can push intraocular pressure higher and make the condition worse.
- Avoid in Urinary Obstruction: Male cats with urinary obstruction and pets with gastrointestinal obstruction should not receive this medication, as anticholinergic effects can worsen both conditions.
- Avoid in Pregnancy: Pregnant or lactating animals should not receive this medication without a veterinarian reviewing the risks and benefits beforehand.
- Caution in Liver and Kidney Disease: Pets with liver or kidney impairment need careful management, as reduced organ function can significantly change how quickly the drug clears.
- Caution in Heart Disease: Pets with heart failure, hyperthyroidism, or hypertension need extra care, as this medication can make these conditions worse.
- Drug Interaction Risk: Share a full list of your pet's current medications, particularly barbiturates, tranquilizers, and other CNS depressants, with your veterinarian before starting cyproheptadine.
Possible Side Effects
- Drowsiness and Sedation: Mild sedation is the most commonly expected reaction in both dogs and cats and often settles with continued use.
- Increased Appetite: Appetite stimulation is a recognized pharmacological effect of this medication and is used intentionally in cats and dogs with poor food intake.
- Dry Mouth and Constipation: Reduced salivation and slowed gut motility from the anticholinergic action of this medication are commonly seen in treated animals.
- Paradoxical Excitability in Cats: Some cats respond with agitation, restlessness, and hyperexcitability instead of sedation, and this should be flagged to a veterinarian promptly.
- Serious Allergic Reactions: Hives, facial swelling, or trouble breathing are rare but serious and need immediate emergency veterinary care.
Storage Information
- Room Temperature: Tablets do best at room temperature inside a tightly closed container, kept away from heat and humidity.
- Protect From Light and Moisture: Direct sunlight and damp conditions can chip away at the tablet's potency, so a dry, shaded storage spot is the right choice.
- Out of Reach: Keep this medication somewhere children and untreated animals in the home cannot get to it.
NOTE: For generic medications, the product image shown may not reflect the actual item received. Generic medications can vary in size, color, and shape between orders depending on the manufacturer. Additionally, your medication may arrive packaged in a HardyPaw Pharmacy vial.
Shipping & Return
We offer ground, express, and priority delivery; see our shipping policy for details.
For return instructions or product concerns, please refer to our detailed refund policy.
Prescription items are NON-RETURNABLE and NON-REFUNDABLE.
Frequently Asked Questions
Q1: Why is cyproheptadine commonly prescribed as an appetite stimulant for cats?
Ans: By blocking serotonin's appetite-suppressing influence in the central nervous system, cyproheptadine removes one of the key signals telling the cat not to eat. Cats dealing with chronic illness, post-operative recovery, or stress-related anorexia tend to respond well to it. It works best as part of a broader plan that also addresses what is causing the poor appetite rather than as the whole solution.
Q2: How does cyproheptadine act as an antidote for serotonin syndrome in pets?
Ans: When serotonin builds up to dangerous levels in the nervous system, the result is tremors, seizures, hyperthermia, and a racing heart rate. Cyproheptadine gets ahead of that by taking hold of both peripheral and central serotonin receptors and cutting off the excess stimulation driving those reactions. It is brought into emergency management of serotonin toxicity from SSRIs, trazodone, tramadol, and similar drugs.
Q3: Why do some cats experience paradoxical excitability instead of sedation when taking cyproheptadine?
Ans: First-generation antihistamines including cyproheptadine can trigger the opposite of what is expected in some cats, producing hyperactivity, agitation, and restlessness rather than calm. It tends to come up more at higher doses and is not predictable from one cat to the next. Unusual agitation after starting the medication is something a veterinarian should hear about, as a dose adjustment or a switch to something else may be the answer.
Q4: Can cyproheptadine be used for feline asthma in cats?
Ans: Cyproheptadine is used off-label in feline bronchial asthma because both histamine and serotonin play a role in the bronchoconstriction that drives the condition, and this medication takes on both. It usually sits alongside corticosteroids and bronchodilators rather than standing in for them. A veterinarian will assess whether it adds enough to the existing protocol to be worth including.
Q5: What distinguishes cyproheptadine from other antihistamines such as diphenhydramine or chlorpheniramine?
Ans: What sets cyproheptadine apart is that it covers both histamine H1 receptors and serotonin receptors at the same time, giving it a wider pharmacological reach than antihistamines that only work on one receptor type. That serotonin-blocking side is what drives the appetite stimulation in cats and makes it useful in serotonin syndrome cases, two areas where diphenhydramine and chlorpheniramine simply do not have traction.