My doctor prescribed buspirone 5 mg for anxiety. I started taking it yesterday and have bad heart palpitations. What would be a good alternative?

Talk to your doctor. There are other medications that could be used to treat your anxiety. Your doctor will decide on one based on your symptoms and existence of other medical conditions. Tell your doctor about the side effect with Buspirone and ask if another medication could be considered. Good luck.
Bus par 5 mg? Is really harmless , discuss with u provider.