The height is decided by hereditary in normal conditions...
But it can be affected by many disease... causing harmonal imbalance and subsequent growth retardation.
Disease causing growth retardation can be treated ...
Otherwise there is no medicine to increase ht.
Next Steps
Please consult a good endocrinologist in your area for through physical check up and proper work up to find out the exact cause of decrease growth.
Health Tips
Take high protein diet rich in vitamins and minerals
Always consult a qualified doctor for this issue.
Beware of misguiding/ false promising advertisement.