What is the cation of pseudoephedrine sulfate 240mg?

The cation of pseudoephedrine sulfate is the pseudoephedrine ion itself, which is a sympathomimetic amine. In the sulfate salt form, pseudoephedrine is combined with sulfate ions, but in its active form, it primarily exists as the pseudoephedrine cation. This compound is commonly used as a decongestant in treating nasal congestion.