Mygrex™ Cold and Sinus Relief 500 mg - 5 mg Strength Tablet 300 per Box (794674_BX) 1/BXMygrex tablets ease symptoms from common colds, body aches, stuffy nose, itchy sinuses and migraines. There are 500 milligrams of acetaminophen and 5 milligrams of phenylephrine HCl per tablet. Acetaminophen is the active ingredient in Tylenol a registered trademark of Kenvue; phenylephrine is the active ingredient in Sudafed PE also a registered trademark of Kenvue . . There are 150 two tablet packets in a handy dispenser carton making it easy to