Can Inderal (propanolol Hydrochloride) be used to treat both essential tremor and hypertension?

The doctor has prescribed Inderal 40mg once a day as a medication both for essential tremor and hypertension (for which I was taking another medicine). Does this mean that i will have to take this medication forever or it can be withdrawn after some time. What can be the side effects.

Beta Blockers and feelings

A recent Dutch study showed that there is a relation between Beta Blockers as hypertension medication and bad feelings. Merel Kindt and her team used propanolo (INDERAL) to remove, talking in short term, the fear induced by painful memory.
This study about Beta Blockers opened the door for new thoughts to help patients suffering from anxiety [...]