Please help

Hello I need help, I have a 5 months old cat with epilepsy, my vet told me to give her 2 pills of a medicine called bialminal 100 tablet, after some research I figured the amount of medicine is very high and can cause the cat het life , please help me I need advice or the right dosage

She weights 1.9 kg I forgot to say

Hello - Bialminal is phenobarbital, an anti-epilepsy drug that is heavily subject to prescribing legislation in the UK.  If this box does not have a label with the the correct dose and patient's details printed on it, it has not been legally prescribed and cannot legally be given here, at any dose.   Furthermore, this particular version is not licensed for feline use so your vet should prescribe an alternative that is, wherever one exists.  Please contact a vet who can prescribe appropriately for your cat.  If this was indeed prescribed by a vet with no label, you could also contact the RCVS and report them.

(Hopefully the reason that you are asking this is that you are not in the UK, but a country where the prescription rules are different.  If this is the case, your vet should normally still be subject to prescribing laws for a drug / doses of this kind, so please speak to them about the dosage and local legal requirements as a matter of urgency before giving any tablets to you cat).

I am not in the UK and where I am there is plenty of medicine is not available, this is the only one I managed to get after long time of looking, my vet told me to give my cat 2 pills a day which is like 200 mg ,that would be deadly overdose, that's why I'm trying to figure it out before I give my cat anything