I’m a 31-year-old woman with wAIHA. Currently, I take: 
- Morning: Pantoprazole 40 mg, then 50 mg prednisolone with breakfast after 1 hour. 
- Noon: Fluoxetine 10 mg + chlordiazepoxide 10 mg. 
- Afternoon: Symbicort inhaler. 
- 7 PM: Pantoprazole 40 mg again, followed by 10 mg rivaroxaban with dinner after 1 hour. 
- 12 AM: Folic acid 5 mg + Symbicort. 

I’ve had chronic constipation, and now steroid-induced joint pain limits my exercise. Laxatives don’t help—my stool is very hard/thick, and straining is severe. I want to start low-dose linaclotide in the morning (under supervision) but worry about interactions with pantoprazole/prednisolone: 
1. How significant are these interactions? Could linaclotide reduce prednisolone’s bioavailability? 
2. About syncope/fainting: Is it only diarrhea-related, or can it occur during defecation (vagus nerve effect)? I need safe, low-risk bowel movements. 
3. How common is syncope with linaclotide? Does taking it 1 hour apart from prednisolone increase the risk?