Alternative Medicine

Butterbur - Seasonal allergic rhinitis may be alleviated with butterbur leaf
It helps to maintain proper histamine & cytokine release. BMJ 1/19/2002 www.purecaps.com
Garlic may help many many issues including rhinitis.  Garlic "oil is known to have a bactericidal activity (about the equivalent of 15 penicillin units per mg)."  Burtis, C. Edward  Nature's Miracle Medicine Chest  Arco publishing
Panothenic Acid (B5) @ https://www.winchesterhospital.org/health-library/article?id=21832 - 7/2013 -
"Acute rhinitis treated with decongestant (vitamin B5) sprays may increase effectiveness & reduce duration of illness." 
Vitamin D - (Daily outdoor sunshine is one's best source of vitamin D.)
Vitamin D archives - http://www.greenpasture.org/public/Blog/?showKW=1329