Natural Allergy Remedies

I have tried various supplements and what not, under a vet's recommendation, but nothing has quite worked enough...everything has helped, yes, but not enough.

It is insanely sandy/dusty during dry spells where I live, to the point of causing both myself and, more importantly, my mare to cough from allergies. I really do want to move somewhere else where we won't have this problem, but I simply can not right now due to college.

Please note that I keep her up-to-date on sandclear...

Someone recommended that I feed her a teaspoon of ginger with her dinner every night, of which I have been doing the past couple of weeks, and it has worked wonders so far! I have been told that ginger is excellent for clearing out that dust. However, from what research I have done, it seems as though ginger is thought to cause ulcers? Is this true? If so, what is another natural remedy that I should try? Or, maybe even a mixture of different herbs?

I also am seriously interested in a...nebulizer?...and would love to hear about those.

This mare is my everything, I want to do what I can to help. The coughing is not a 24/7 thing, it is worse on windy/dusty days, and is most notable at a lope. There is no snot or goopy eyes, she's been seen by a vet and is in good health...it's just those blasted allergies. Can they develop into heaves??

Thank you very much, feel free to ask any questions if it helps. 😊