Zyrtec vs Benadryl for Dogs?
While both drugs can be effective at relieving allergy symptoms, they have different mechanisms of action and can have different side effects. In this article, we will compare and contrast Benadryl and Zyrtec in terms of their effectiveness, side effects, and suitability for dogs.

Is Benadryl or Zyrtec better for dogs?
When it comes to which is better for dogs, it really depends on the individual dog and the situation. Both drugs can be effective at relieving allergy symptoms in dogs, but they can also have different side effects and may not be suitable for all dogs.
Here are a few things to consider when deciding whether to use Benadryl or Zyrtec for your dog:
- Benadryl is generally less expensive than Zyrtec.
- Benadryl can cause drowsiness in some dogs, while Zyrtec is less likely to cause drowsiness.
- Benadryl is available in a liquid form, which can be easier to administer to dogs who are unwilling to take pills.
- Zyrtec is longer-acting than Benadryl, so it may provide relief for a longer period of time.
Your veterinarian will be able to recommend the best treatment plan for your dog based on their individual needs and medical history.
Benadryl for dogs reviews
Benadryl is a brand name for diphenhydramine, an antihistamine that is commonly used to treat allergies in both humans and dogs. It works by blocking the effects of histamine, a chemical that is released in response to an allergen. Histamine can cause symptoms such as itching, swelling, and redness.
One of the main benefits of Benadryl for dogs is that it can help to relieve itching, which is a common symptom of allergies. It can also be used to treat other conditions such as motion sickness, anxiety, and insomnia. However, it’s important to note that Benadryl can make your dog sleepy, so it should be used with caution.
How long will Benadryl make my dog sleepy?
The effects of Benadryl can vary depending on the dose and the individual dog. Generally, Benadryl will make a dog sleepy for a few hours after it is administered. However, the effects may wear off more quickly in some dogs than in others.
Does Benadryl help dogs with allergies?
Yes, Benadryl can help to relieve the symptoms of allergies in dogs. It is particularly effective at reducing itching, but it can also help with other symptoms such as sneezing, runny nose, and hives.
Signs of Benadryl overdose in dogs
It’s important to use Benadryl as directed and to avoid giving your dog too much. An overdose of Benadryl can cause symptoms such as rapid heartbeat, dilated pupils, seizures, and coma. If you suspect that your dog has overdosed on Benadryl, seek veterinary care immediately.
How often can I give my dog Benadryl for itching?
The recommended dosage of Benadryl for dogs is 1 mg per pound of body weight, given every 8-12 hours. However, it’s important to consult with your veterinarian before giving your dog any medication, as the dosage may vary depending on the dog’s individual needs.
Can I give my dog Benadryl every day for anxiety?
While Benadryl can be used to treat anxiety in dogs, it is not recommended for long-term use. If your dog is experiencing anxiety, it’s important to identify the underlying cause and address it with behavioral or environmental changes, or with the help of a professional trainer or veterinarian.
Do vets recommend Benadryl for dogs?
Yes, many veterinarians recommend Benadryl for dogs to treat allergies and other conditions. However, it’s important to follow your veterinarian’s instructions and to use the medication only as directed.
How long does it take for Benadryl to work on dogs?
The effects of Benadryl can start to be noticed within 30 minutes to an hour after administration. However, the full effects may take several hours to develop.
Zyrtec for dogs reviews
The active ingredient in Zyrtec is cetirizine hydrochloride, which works by blocking the release of histamine in the body. In dogs, Zyrtec can be used to alleviate allergy symptoms and itching caused by flea bites, food allergies, and environmental allergens.
Can my dog take Zyrtec every day?
Yes, in most cases, dogs can take Zyrtec every day as long as it is prescribed by a veterinarian. However, it’s important to monitor your dog’s symptoms and any side effects they may experience. If your dog’s symptoms worsen or they experience any adverse effects, you should consult your vet immediately.
Zyrtec for dogs side effects
While Zyrtec is generally considered safe for dogs, it can cause side effects in some cases. The most common side effects of Zyrtec in dogs include drowsiness, lethargy, and gastrointestinal upset. These side effects are usually mild and will resolve on their own. However, if your dog experiences any severe side effects, such as difficulty breathing or swelling of the face or tongue, you should seek veterinary attention immediately.
Apoquel vs. Zyrtec for dogs
Apoquel is another medication commonly used to treat allergies in dogs. It works by inhibiting the production of cytokines, which are chemicals that cause inflammation and itching. While Apoquel is more effective than Zyrtec in controlling allergy symptoms, it is also more expensive and can cause more severe side effects. Zyrtec is generally considered a safe and effective alternative to Apoquel for mild to moderate allergy symptoms.
Zyrtec for dogs anxiety
While Zyrtec is primarily used to treat allergy symptoms in dogs, some owners have reported that it can also help alleviate anxiety in dogs. However, there is no scientific evidence to support this claim, and Zyrtec should not be used as a primary treatment for anxiety in dogs.
How much Benadryl can I give my dog?
The recommended dose of Benadryl for dogs is 1 mg per pound of body weight every 8 hours. So if your dog weighs 40 pounds, he should take 40 mg of Benadryl.
Dog’s weight | Benadryl dosage |
---|---|
5 pounds | ½ of a 12.5 mg tablet |
10 pounds | one 12.5 mg tablet |
20 pounds | one of a 25 mg tablet |
50 pounds | two 25 mg tablets |
80 pounds | three 25 mg tablets |
100 pounds | four 25 mg tablets |
How much Zyrtec can I give my dog?
Zyrtec tablets can be given to dogs at a dose of 0.5 mg per pound of body weight and should not exceed 20 mg per dose. For example, if your dog weighs 20 pounds, give her one 10 mg tablet. If she weighs 40 pounds, give her two 10 mg tablets.
Dog’s weight | Zyrtec dosage |
---|---|
5 pounds | ½ of a 5 mg tablet |
10 pounds | one 5 mg tablet |
20 pounds | one 10 mg tablet or two 5 mg tablets |
50 pounds | two 10 mg tablets |
80 pounds | two 10 mg tablets |
100 pounds | two 10 mg tablets |
FAQs about Benadryl or Zyrtec for dogs
Here’s a list of FAQs about Benadryl vs Zyrtec for dogs, along with helpful answers to each one.
1. Can I give my dog Benadryl or Zyrtec for allergies?
Yes, both Benadryl and Zyrtec are safe and effective antihistamines that can be used to treat allergic reactions in dogs. However, you should always consult with your veterinarian before giving your dog any medication, as they can advise you on the proper dosage and whether or not it’s safe for your dog to take.
2. How do I know which medication to give my dog?
The choice between Benadryl and Zyrtec depends on your dog’s individual needs and symptoms. Benadryl is usually used to treat mild to moderate allergic reactions and is fast-acting, while Zyrtec is more commonly used for chronic allergy symptoms and is longer-lasting. Your vet can help you determine which medication is best for your dog.
3. How much Benadryl can I give my dog?
The recommended dosage of Benadryl for dogs is 1mg per pound of body weight, given every 8-12 hours. However, it’s important to note that the correct dosage for your dog may vary depending on their specific needs and health status. Always consult with your vet before giving your dog any medication.
4. How much Zyrtec can I give my dog?
The recommended dosage of Zyrtec for dogs is 0.5mg per pound of body weight, given once a day. Again, the correct dosage for your dog may vary depending on their specific needs and health status, so it’s important to consult with your vet before giving them any medication.
5. Are there any side effects of giving my dog Benadryl or Zyrtec?
While both medications are generally safe for dogs, there can be some side effects. The most common side effect of Benadryl is drowsiness, while Zyrtec can cause dry mouth, diarrhea, or vomiting in some dogs. It’s important to monitor your dog for any signs of adverse reactions and to contact your vet if you notice anything unusual.
6. Can I give my dog both Benadryl and Zyrtec at the same time?
It’s not recommended to give your dog both medications at the same time unless advised to do so by your vet. Combining medications can increase the risk of side effects and may not be necessary for treating your dog’s symptoms.
7. How long does it take for Benadryl or Zyrtec to start working?
Benadryl usually starts working within 30 minutes to an hour after it’s given, while Zyrtec can take up to 24 hours to reach its full effect. It’s important to be patient and give the medication time to work, even if you don’t see immediate results.
8. Are there any conditions that would make it unsafe to give my dog Benadryl or Zyrtec?
Yes, there are some health conditions that may make it unsafe for your dog to take these medications. For example, dogs with certain heart conditions or liver disease may not be able to safely take Benadryl or Zyrtec. Always consult with your vet before giving your dog any medication to ensure that it’s safe for them to take.
9. Can I give my dog Benadryl or Zyrtec for other conditions besides allergies?
While Benadryl and Zyrtec are primarily used to treat allergies in dogs, they can also be used to alleviate symptoms of other conditions. For example, Benadryl can be used to treat motion sickness or anxiety, while Zyrtec can help with itching caused by skin conditions. However, it’s important to consult with your vet before giving your dog any medication for a condition it wasn’t prescribed for.
10. Can I give my dog Benadryl or Zyrtec if they’re pregnant or nursing?
It’s best to avoid giving your dog Benadryl or Zyrtec if they’re pregnant or nursing, as there haven’t been enough studies to determine the safety of these medications for pregnant or nursing dogs. It’s always best to consult with your vet to determine the safest course of action for your dog.
11. Can I give my dog Benadryl or Zyrtec if they’re taking other medications?
It’s important to consult with your vet before giving your dog Benadryl or Zyrtec if they’re taking other medications, as there may be interactions between different drugs. Your vet can advise you on the best course of action and whether it’s safe for your dog to take these medications alongside other drugs.
12. How long can I give my dog Benadryl or Zyrtec?
The length of time you can give your dog Benadryl or Zyrtec depends on the underlying condition being treated. For example, if your dog has seasonal allergies, you may need to give them medication for several weeks or months during allergy season. However, it’s important to consult with your vet to determine the appropriate length of treatment for your dog’s specific condition.
13. Can I buy Benadryl or Zyrtec over the counter or do I need a prescription?
Both Benadryl and Zyrtec are available over the counter at most pharmacies and pet supply stores. However, it’s important to consult with your vet before giving your dog any medication, even if it’s available over the counter. Your vet can advise you on the appropriate dosage and whether it’s safe for your dog to take.
14. Are there any natural alternatives to Benadryl or Zyrtec for treating allergies in dogs?
There are some natural remedies that may help alleviate allergy symptoms in dogs, such as omega-3 fatty acids, probiotics, and herbal supplements. However, it’s important to consult with your vet before giving your dog any natural remedies, as some supplements can interact with other medications or have adverse effects.
15. What is the best antihistamine for dogs with skin allergies?
The best antihistamine for dogs with skin allergies can vary depending on the individual dog’s needs and symptoms. Some of the most commonly used antihistamines for dogs include Benadryl, Zyrtec, and Claritin. Your vet can advise you on the best course of treatment based on your dog’s specific condition.
16. What is the best antihistamine for dogs in general?
Again, the best antihistamine for dogs can vary depending on the individual dog’s needs and symptoms. However, Benadryl is one of the most commonly used antihistamines for dogs, as it’s generally safe and effective for treating a range of allergy symptoms.
17. What is the best allergy medicine for dogs who lick their paws?
If your dog is licking their paws due to allergies, your vet may recommend an antihistamine or a medication to reduce inflammation, such as steroids. They may also recommend topical treatments, such as medicated shampoos or creams, to soothe your dog’s skin. It’s important to consult with your vet to determine the best course of treatment for your dog’s specific condition.
18. What is the best over-the-counter allergy medicine for dogs?
Benadryl is one of the most commonly used over-the-counter allergy medicines for dogs. It’s important to consult with your vet before giving your dog any medication, including over-the-counter medications, as the appropriate dosage can vary depending on your dog’s size and condition.
19. What is the best anti-itch medicine for dogs?
The best anti-itch medicine for dogs can vary depending on the underlying cause of your dog’s itching. Some dogs may benefit from antihistamines or medications to reduce inflammation, while others may need topical treatments or prescription medication. Your vet can advise you on the best course of treatment based on your dog’s specific condition.
20. Are there any side effects to giving my dog antihistamines or allergy medicine?
Like any medication, antihistamines and allergy medicine can have potential side effects. These can include drowsiness, dry mouth, and gastrointestinal upset. In rare cases, more serious side effects such as difficulty breathing or seizures can occur. It’s important to consult with your vet before giving your dog any medication and to monitor them closely for any signs of adverse reactions.