Originally Posted by CrazyFishLady
I've many times cleared out a bloated betta with blanched pea, so I'd have to disagree.
Reason why most would recommend not to use the pea method is because it is a treatment for bloated/constipated goldfish. Bettas are insectivores, and therefor their system cannot digest the pea at all, nor do they get any nutritional value from it (and a lot of bettas, if not most, won't eat it as it's vegetable matter and they don't eat that in their diet. Some bettas will eat just about anything even if it's not good for them.. the little piggies!). You are basically putting something in them that can't be digested in hopes that it will help push out the other food since the body will do what it can to remove the unwanted food- the pea. It's like us eating a large rock in hopes that our body will use that mass to push down and out the excess food in our system. Not idea, not healthy, and sometimes it can cause harm.
It's best to use frozen/live daphnia for bettas as that will help them when constipated, and it is a food item that is good for them and can be digested properly, or Epsom Salt.