Migron-FX Tablet is a combination medication that treats allergy symptoms like runny nose, stuffy nose, sneezing, watery eyes, and congestion or stuffiness. Migron-FX Tablet is a combination medication that relieves symptoms such a blocked or runny nose, sneezing, and itchy or watery eyes. This will make it easier for you to carry out your everyday duties. It rarely has major adverse effects, and you may only need to take it on the days you experience symptoms. If you're taking it to prevent symptoms, you should take it on a regular basis to get the maximum benefits.