I remembered that when I took my new magnesium ascorbate last week, I had a glass of apple juice the day before. Usually when I have apple juice I get rhinitis, and sure enough I had it that time. So, I figured it was probably that and not the MA. So, I tried it again and for the past couple of days haven't had rhinitis. I'm also feeling a little better, although have a bit of a headache (which may not be connected). So, I'm going to continue with it. I had a little scoop with the powder that measures 1000mg, so I take half a scoop in the morning. If I am okay with it, I will probably increase it.