The salts pseudoephedrine hydrochloride and pseudoephedrine sulfate are found in many over-the-counter preparations either as single-ingredient preparations , or more commonly in combination with antihistamines , paracetamol -LRB- acetaminophen -RRB- and/or ibuprofen .

The salts pseudoephedrine hydrochloride and pseudoephedrine sulfate are found in many over-the-counter drugs either as single-ingredient preparations , or more commonly in combination with antihistamines , paracetamol -LRB- acetaminophen -RRB- and/or ibuprofen .
