Brief Answer:
Can be switched

Detailed Answer:
Hello

Thanks for the query

Both the drugs are of the same anti hypertensive class called the beta blockers which mainly acts by reducing the heart rate. However atenolol is usually better tolerated and has less side effects compared to the other as it is more selective in its function. So my advice to you is to continue using atenolol if you are tolerating it well.

I hope I was of help, if you have any further queries please get back to me

Regards

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