Has anal-sphincter botox helped anyone's constipation?

I met with a CRS who, along with an exam and possible banding ('rhoids), offered to provide sphincter botox as a way to relax my sphincter/pelvic floor and allow things in there to relax, potentially helping my 'rhoids and my constipation.

I started wondering if perhaps the tight sphincter (connected to tight pelvic floor, constipation, who knows which came first!) could be the missing link in my incomplete evacuations, continuing constipation, and if botox could be the miracle cure...

I'm sure it's not that simple, but wondering if anyone's been helped by this! Thanks!