maleate 4mg. That means you had around 8x4 that is 32mg piriton in 12 hours.The max recommended dose is 24mg in 24 hrs. The common side effects are sedation, drowsiness
, blurred vision
, dry mouth
etc. However I dont think you would be suffering from symptoms of overdose. Do not take alcohol along with piriton. Do not drive or operate heavy machinery while on piriton. I am sure your body will flush out the drug. Stop taking piriton for the day as you have already exceeded the maximum recommended dosage.
Please visit your doctor / post your health query. Consuming a lot of medications without knowing the dosage is very dangerous.
Have a nice day .