That would be reasonable - cipro at 250 mg twice daily for 7 days and immodium - 1 tablespoon twice daily. It may be stress colitis which may resolve after being at home a few days. If after 24 hours of treatment, though, his appetite doesn't come back I would take him in to your vet for an exam.
Dr. Debbie
Veterinarian
Full time practicing companion animal veterinarian.