I too have medication related constipation. After 7 months of diarrhea from microscopic colitis before treatment, I try not to complain too loudly, but here is my formula. It may need to be adjusted for severity of symptoms.

I eat two salads a day - that’s six cups of salad. Mine is a combination of iceberg, spinach and romaine with no ingredients that are known to enhance constipation. Otherwise, tomato, bacon, corn, etc - think volume.

I try to eat other veggies at lunch or dinner that might be considered roughage - think broccoli or cabbage (raw as in slaw), etc.

I drink eight 8ounce glasses of water over the day. I fill a half gallon container in the morning and put it on the kitchen island to make sure I drink all through the day.

At bedtime:
* a 100mg decorate sodium stool softener
* four benefiber gummies

Worst case, I go every other day. But more days than not, I go before 10am.

It’s not the set your clock by it, 6:30am predictable event anymore. But I need the meds causing the constipation, so…

Hope that’s helpful.