: It can be taken on an empty stomach or on a full stomach , but it is usually recommended to eat on a full stomach. Since you do not know anything about it, you are going to take it without consulting a doctor ... this cannot be done at all. Beta blocker is a prescription only medicine ( POM), which should not be taken without expert advice. Moreover, there are several variations of beta blockers , depending on the patient's condition, the dose-number is also less. Social phobia is a mental and / or hormonal problem. Choose a diet according to the advice of a psychiatrist or you will get worse in the end.