Drug Uses Tenormin is used in the treatment of high blood pressure, angina pectoris and other heart conditions that may occur after a heart attack. Usage Tenormin may be taken with or without food. However, the best way to take it is as prescribed by your doctor. Missed Dose You should try and take your doses on time taking care not to miss any. But if you do miss a dose, then you may take the forgotten dose as soon as you remember. But space out your remaining doses accordingly. If no, then skip it and continue with your regular dose. But do not take a double dose. Storage Store it at room temperature. Overdose Some of the typical symptoms of a Tenormin overdose include Congestive heart failure, constricted airways, low blood pressure and slow heart beat. Seek medical attention immediately if you suspect an overdose. More Information Use with caution if you suffer from asthma, seasonal allergies, or other bronchial conditions. The drug may cause light-headedness, dizziness, and faintness in some people. Do not consume alcohol along with the drug. Do not drive or handle heavy machinery until you know how to react to the drug.