I have absolutely NO regrets so far in using propanolol. My daughter did the 72 hour hospital stay, she does the blood pressure monitoring and sugar testing twice a month (it was weekly in the beginning) and so far we haven't had any trouble. You can read about her journey here:
Deep hemangioma on left eyebrow towards nose
Started propanolol Feb. 11th, 2010
Off of propanolol aprox. June 2011
Takes 3 doses per day at 1.3ml
2nd Weaning of prop. not a success back on it March 22. Only one dose of 1.3ml now Baby girl is 19 months old
Did Timolol gel for awhile, stopped, & back on - 4 years old.