Cat Benadryl Dosage Tools

Created By : Bhagya
Reviewed By : Rajashekhar Valipishetty
Last Updated at : May 1,2023

Cat Benadryl Dosage Tools is a free tool that helps calculate the dosage of Benadryl for your furry friend. Before diving into the article it is very important for you to know that you should never give any medication to your cat without proper consultation and prescription. Coming back to the Benadryl dosage calculator, this tool gives you the dosage in mg, liquid dosage along with the number of 25 mg tablets, and also the number of 12.5 mg chewable tablets for your furry pet and all you have to do is enter the weight of your cat and nothing else.

Your cat's weight
Benadryl dosage in
Liquid (12.5 mg/5 mL)

Cat Benadryl Dosage Tools: Benadryl is an antihistamine that you can give to your cat in case of motion sickness, vomiting, or an allergic reaction. Benadryl is useful when given in moderation with a proper dosage. This calculator will help you in achieving that. The only thing that you need to be aware of is your furry friend’s weight and the rest will be taken care of by the Cat Benadryl Dosage Tools. For a detailed account of the cat Benadryl dosage and how to use the cat Benadryl dosage calculator, refer to the article given below.

How Safe is Benadryl for Cats?

Generally, Benadryl is not considered to be harmful to cats but it is really important that Benadryl should only be given if and when recommended by a veterinarian. Otherwise, improper dosage of Benadryl can cause serious health complications. As mentioned before, Benadryl is an antihistamine, and antihistamines are not always proven to be safe for cats.

Some cats may be allergic to antihistamines. There are certain steps that you can take in order to make sure that there are no adverse effects of Benadryl on your furry friend. These steps are listed below:

  • Gel capsules should be avoided as they contain an irritating stimulant solvent that can prove to be toxic for cats.
  • A proper dosage of Benadryl is very important. You should always make sure that the dose you are giving to your pet is on par with its weight. For the same reason, you should always consult a veterinarian before giving Benadryl to your cat and also use the Cat Dosage Tools for your convenience.
  • The active ingredient in Benadryl is diphenhydramine. While purchasing the medicine you should always make sure that it has no other active ingredient than diphenhydramine. If it does, always consult a veterinarian about it.
  • Once you give your cat Benadryl, make sure to look out for any adverse effects. You can keep an eye out for the following symptoms:
    • Hyperexcitability
    • Nausea
    • Decreased urination
    • Diarrhea
    • Sedation
    • Decreased appetite
    • Dry mouth
  • If any of such symptoms are visible in your furry friend, make sure to keep your veterinarian updated and be ready for a quick visit to the clinic as a precautionary measure.

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How to Calculate Benadryl Doses for your Cat?

The only parameter required in calculating the Benadryl Dosage for your furry friend is its weight. The formula used for the same is, Benadryl dosage in mg = cat’s weight in lb * 1mg

This means that the proper dosage of Benadryl for your furry friend in mg is the same as its weight in pounds (lb). You can also calculate the liquid Benadryl dosage for your cat. In order to do that, follow the below-listed steps:

  • Firstly calculate the dosage of Benadryl in mg i.e. cat’s weight in lb * 1 mg
  • Then you have to convert milligrams into milliliters using the formula described in the next step
  • The formula for converting the Benadryl dosage into milliliters is: 12.5 mg of benadryl dosage = 5 ml of liquid benadryl
  • You can also use the Cat Benadryl Dosage Tools to find out the dosage for your cat in mg as well as ml.

Cat Benadryl Dosage Calculation Examples

Example 1:

The weight of my cat is 15 pounds. What is the suitable Benadryl dosage?


The formula for the calculation of cat Benadryl dosage is,

Benadryl dose = Cat’s weight in pounds (lb) * 1 mg


Cat’s weight = 15 lb


Benadryl dose = 15 lb * 1mg = 15 mg

Example 2:

The weight of my cat is 10 pounds. What is the liquid Benadryl for it?


The formula for benadryl dosage is,

Dose = cat’s weight in lb * 1 mg


Weight = 10 lb


Dose = Weight in lb * 1 mg


Dose = 10 * 1 = 10 mg

Now, for liquid dosage:

12.5 mg = 5 ml


10 mg = ( 5 / 12.5 ) * 10 = 4 ml

FAQs on Cat Benadryl Dosage Tools

1. Why is Benadryl given to cats?

Benadryl is a kind of antihistamine that is given to cats in order to cure symptoms of allergic reactions, vomiting, motion sickness, etc.

2. How safe is liquid Benadryl for Cats?

When given in moderation and in the proper dosage, liquid Benadryl is completely safe for cats. Although, always consult a veterinarian before giving your furry friend any kind of medicine. Also, keep a check on your furry friend for symptoms mentioned earlier in the article.

3. How can I calculate the dosage of Benadryl for my cat?

In order to calculate the proper Benadryl dosage for your cat, you can refer to the formula given below: Benadryl Dosage for cats = Cat’s weight in lb * 1 mg

4. How to calculate the liquid Benadryl dosage?

You can calculate the liquid Benadryl dosage by first calculating the dosage in mg by referring to the aforementioned formula and then converting the same from mg to ml. In order to do that all you need is to take into account the following relation: 12.5 mg of benadryl dosage = 5 ml of liquid dosage