The leaflet lists who should not take it, how much to take, and the side effects. Ask us if you do not have a copy.
Decongestants like Sudafed can only be supplied to the person who will take them, from their own account.
We ask because it affects some safety checks (for example pregnancy).
There is a legal limit on how much pseudoephedrine/ephedrine can be supplied, and they cannot be bought together.
MAOIs are an older type of antidepressant.
Some decongestant products (such as Lemsip) also contain paracetamol - taking more than one at once can cause an overdose.