The Sybil Duo Tablet can be taken with or without food It is important to take it regularly at evenly spaced intervals following the schedule prescribed by your doctor Taking it at the same time every day will help you remember to take it The dosage will depend on the purpose of your treatment but make sure to complete the full course of the antibiotic as prescribed by your doctor Even if you start feeling better do not stop taking it prematurely as this can allow bacteria to survive and potentially lead to a recurrence of the infection The most common side effects of this medicine are vomiting nausea and diarrhea These side effects are typically mild but if they persist or bother you for more than a few days it is important to inform your doctor Before using this medication inform your doctor if you have any allergies to antibiotics or any kidney or liver problems If prescribed by a doctor this medication is generally considered safe to use during pregnancy and breastfeeding