Why did allergy problems rise after Covid-19?

The Covid-19 pandemic appeared in 2020. Since then, over the past five years, the health problem that has caused people the most suffering is allergies. As a result, during this period, the sale of allergy medicines has increased at the highest rate. On the other hand, in terms of quantity, people, as always, have bought the most gastric medicines.

In today's Star Explains, let’s discuss why allergy problems have increased the most. Apart from this, which other medicines are you buying the most?