How long before you know if a medication is effective?

mrw5641

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Hi all! Been posting a lot here lately! My cat is on a transdermal anti histamine called Chlorpheniramine Maleate and I have given it to him 2 days in a row but I don't think it's working for his allergies as he is still shaking his head.

Does it take a week of dosing before determining if this is effective?
 

neely

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According to what I've read this medication is supposed to take effect quickly, 1 - 2 hours. If you have any doubts about it's effectiveness please contact your vet.
Chlorpheniramine Maleate
 
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mrw5641

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neely neely I did see that 1-2 hours and I will contact my vet. I am going to give it more time before I do.

It's only been two days and I'm hoping it takes some time to build up and become more effective.
 
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mrw5641

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This medication is most effective if given on a regular basis and given prior to exposure to the allergen (too late for the second part) but seems it will be more effective on a regular basis
 
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