I use Heather's Tummy Tamers brand peppermint oil pills. It is a hokey name but she is smart and I have benefited from her email newsletter that doles out advice. She has had IBS since childhood. I can get her peppermint pills at the CVS in my town. I take one pill, 3X a day, 15 mins (minimum) before my meal.

Peppermint oil is supposed to calm the gut so that it doesn't operate out of sync or spasm. I think there are studies.

Regarding bloat, that is a rare occurrence for me. Some recommend apple cider vinegar for bloat. And apple cider vinegar (Bragg's organic, every grocery seems to sell it) seems to be the missing ingredient in all the things I do, to keep my IBS-C in remission.

I would give it a try. It won't hurt you, but Google it and see for yourself. I like to put NIH in my search box (National Institute of Health), to see if there is any research, but England's NHS (National Health Service) has useful, actionable information and it is generally very helpful.

Let me know if I didn't answer your query or if you have follow-up questions.