To minimize the risk of stomach upset it is advisable to take Pensyn Dry Syrup with a meal Follow the prescribed schedule provided by your doctor and take it regularly at even intervals Taking it at the same time every day will help you remember The dosage will vary depending on your condition but it is important to complete the full course of this antibiotic as instructed by your doctor Even if you start feeling better do not stop taking it prematurely If you discontinue the medication too soon some bacteria may survive leading to a recurrence or worsening of the infection Common side effects of this medication include mild vomiting nausea and diarrhea If these symptoms persist or bother you inform your doctor Prior to taking the medicine inform your doctor if you have any allergies to antibiotics or any kidney or liver issues It is also important to disclose all other medications you are taking to your healthcare provider as they may interact with or be affected by this medicine If prescribed by a doctor this medication is generally considered safe to use during pregnancy and while breastfeeding