CompositionGrenil F Tablet is used to prevent migraine headaches. It is a single-ingredient medicine containing flunarizine, and belongs to a class of medicines called calcium channel blockers.
This medicine works by helping stop the blood vessel changes and abnormal nerve activity linked with migraine, so attacks happen less often and are less severe. Take it every day as your doctor prescribes, usually in the evening, and keep taking it even if you do not notice a quick benefit, as the effect builds up over several weeks.
Keeping a regular sleep routine, eating meals on time and drinking enough water can help reduce attacks alongside this treatment. Noting down and avoiding your triggers, such as stress, bright lights, skipped meals or certain foods, may also help, as can gentle exercise and relaxation.
Before taking this medicine, tell your doctor if you have or have had depression or Parkinson's disease, as it can make both worse. Also tell your doctor about liver, kidney or heart problems, pregnancy, breastfeeding, and any other medicines you take. It can cause drowsiness, so avoid driving until you know how it affects you, and avoid alcohol. Contact your doctor if you notice low mood, tremor or unusual movements, and note that it is not recommended for children unless a doctor advises.
