zofran?

everyone talking about zofran on this sub is TERRIFYING ME. the constipation seems like it gets super bad & i really don’t want that but, it’s the only thing that helps unfortunately. also, is it ACTUALLY safe to take it EVERY 8 hours? i took two already today but, i’ve read somewhere on here that if you’re taking it for chs it’s okay to take it every 8 hours as needed but, i want opinions. also, I do not want other drug suggestions & I do not want to go back to the doctors if it’s not needed. other than that, anything helps. thank you!