Looking for something for my GF to take. She has pretty serious seasonal allergy, primarily triggered by red cedar tree. She tried several medications, including Zyzal (caused swelling and discomfort in the joints), Zyrtec (sleepiness), and Benadryl (drowsiness). She has seen several doctors but the medications all have serious side effects for her. allergy shots have not taken care of the problem either.
Is there anything you can recommend that she can try? Would an immune boosting supps help or make the allergic response worse?