Cilny O 20 Tablet can be taken on an empty stomach or with food However it is recommended to take it regularly at the same time each day as prescribed by your doctor The dosage will depend on your condition and your response to the medication It is important to continue taking this medication even if you feel well By reducing your blood pressure it helps in lowering the risk of heart attack or stroke Therefore do not stop taking it unless instructed by your doctor You can enhance the effectiveness of this medication by making certain lifestyle changes such as staying active quitting smoking and following a lowsalt and lowfat diet The most common side effects of this medicine include swelling in the ankles or feet edema headaches sleepiness dizziness tiredness changes in taste and upset stomach Since it may cause sleepiness and dizziness avoid driving or performing tasks that require concentration until you know how it affects you If any of the side effects bother you or persist consult your doctor Before taking this medicine inform your doctor if you have any kidney or liver problems or severe dehydration Pregnant or breastfeeding women should also seek advice from their doctor before taking it Regular blood pressure checks and possibly kidney function tests will be required while using this medication