Yes I have tried all that to not avail. I believe it’s bc I’m on Lyrica also. Both slow down nerve transmission speed and that includes nerves that have to do with bowel motility. I’m just using sm amt of cannabis gummy at bedtime but it still constipates over the next few days. I’ve just started drinking Marshmellow loose tea which instructions say should steep in warm water for three hrs. And served warm not hot. The next day I stew two prunes and they work.
Fiber makes my constipation worse I found, because the nerves do not respond to it.