https://www.youtube.com/watch?v=jE4AdU66egg
Asthma is caused by a deficiency of 3 nutrients:
Magnesium
Manganese
Essential Fatty Acids
I would suggest taking all 90 essential vitamins, minerals, amino acids, and fatty acids to correct this problem.
Optimal amounts of plant derived colloidal chelated magnesium and manganese, together with 9 grams of fatty acids daily will reverse this condition, however, the co-factors (all the other vitamins/minerals etc) are necessary as they work in a synergistic manner.
Do some research on doctor Joel Wallach, as he has several videos on youtube. Watch them all, or search "doctor wallach and asthma"..
If you are deficient in one or more of the above nutrients, you cannot produce
prostaglandins (hormones) which allow the bronchi to open..