Allergy season in Israel is any time it isn’t raining, so be sure to bring allegra if you feel you need it. My allergies are Baruch Hashem, very mild, all I get is a runny nose, so if I don’t take my allergy meds, its not such a big deal. Make sure that before making aliyah, that you know if your medication is or isn’t available in E”Y. After making aliyah G-d willing later this year, I will need to switch one of my medications, but it is good to find out in advance, so that you can stock up if possible (the one I may switch to won’t work as well based on previous experience, but that is how badly I want to make aliyah…).