I am allergic to dust I suffer from runny nose

Patient: I am allergic to dust. I suffer from runny nose atleast 3-4 times a week. I get headaches due to some. I am planning to take Montek LC. Not sure if it’s safe. Please advice.Also I sweat a lot, whenever I am in hot conditions and under pressure. Like lot of water coming from palms and fingers. Tried many medications from various doctors, but no go.