All drugs interact differently for person to person. You should check all the possible interactions with your doctor before starting any medicine.
Interaction with Alcoholmoderate
Description - Using alcohol while taking Propranolol may cause an additional lowering of the blood pressure. This may result in some very severe complications over time.
Instructions - Use of alcohol should be avoided especially when you start taking this medicine medicine or a change its dosage. Symptoms like headache, dizziness, change in pulse or heart rate should be reported to the doctor.
Interaction with Medicine
Propranolol should not be used in patients suffering from bronchial asthma or Chronic Obstructive Pulmonary Disease. Report the incidence of Asthma or other obstructive diseases to your doctor so that Propranolol can be substituted with another medicine.
Propranolol is not recommended for use if you suffer from a heart condition. Heart failure, a disease of the blood vessels, rhythm disorders etc should be informed to the doctor before Propranolol is prescribed. It is likely that the symptoms of heart disease may worsen and hence caution is advised.
Propranolol should be used with caution in patients suffering from diabetes or have a condition where the likelihood of a sudden decrease in blood sugar levels is high.
Propranolol should be used with caution if you have seasonal allergies or are allergic to certain specific substances like pollen, cheese etc. The frequency of allergic attacks may increase and medicine to treat allergy might become less effective.
This is not an exhaustive list of possible drug interactions. You should consult your doctor about all the possible interactions of the drugs you’re taking.