Allergy is such an ailment; that even dust can trigger it off. The main reason for developing an allergy is a weak immune system. A weak immune system is susceptible to the slightest change in the climate; however, this should not be the case. Nonetheless, if such is the case then there is nothing better than taking the syrup of crushed grape seeds. This would strengthen your immune system and make resistant to the most harsh weather. It would be much better if the grape seeds are of the black one. This is so because black grapes are bigger in size and so the seeds are also bigger in size.