Im 21 diagnosed with a mild MVP and i started taking Inderal 10mg (propranolol) for a while as it helps keeping my heart rate down .. But for a couple of weeks i started feeling my erection isnt so firm and i have decreased sex drive , i read its a common side effect of propranolol .. Can this small dose be the reason or is it just anxiety and psychic reflex when i read the article ? something else please how can i stop the b-blocker if im taking 1pill(10mg) a day now?