I suffer from sinus congestion frequently and used to purchase generic decongestants containing pseudoephedrine from Kroger. The last time I tried to buy some, about two months ago, the pharmacist suggested that I try the new substitute that doesn't contain pseudoephedrine. I wish I could remember the name of the substitute ingredient, but I took the pills back after a trip to the emergency room. About an hour after I took the pill with the substitute (supposedly safer) ingredient, my heart started beating so fast that I became faint and nauseous and then passed out. The ER physician told me that the cardiac ER had seen many people who had similar reactions. So, if any of you try to take the substitute, please be aware of the potential for serious adverse reactions.
It's called phenylephrine.