Q1: Is it possible to take this without food?
No, take with meals to prevent stomach upset.
Q2 Does it work with viral infection such as flu?
Only in case of bacterial infections.
Q3: Is it capable of causing loose stools?
Yes, because of impact on gut flora.
Q4 Is it safe during pregnancy?
Usually safe, ask doctor.
Q5 Is it possible to take alcohol with it?
Should be avoided, since it enhances side effects.