CoCodamol is a pain killer having a combination of Codeine and paracetamol
. It is common pain killer. Because of the Codeine contain in it along with paracetamol, it pain killing activity is more.
These adverse effects which you mentioned can there be because of the codeine component and that too when taken in wrong dose. Codeine is an opiate and belongs to morphine group of drugs, but its property is very different from morphine that why it is commonly used.
Common adverse effects of codeine used as pain killer are euphoria, itching, nausea, vomiting, drowsiness, dry mouth, pupil constriction, hypotension
, urinary retention
, depression, constipation
. Some times a rare and potentially serious adverse drug reaction
associated with opioids is respiratory depression. This is because of formation of morphine because of metabolism of codeine in the body. In higher dose this can be the reason for the effect which you have faced. Since you are sensitive for this type of effect, be care full when taking pain medication and make sure it has no component for opioids.
Thanks and take care.