Almost all height increasing medicines are useless. mostly height depends upon genetic predisposition and lifestyle including physical activity, fulfillment of dietary requirements, environmental conditions and frequency of illness I.e. general health condition.
After the age of 23 years, it's very difficult to increase height.
Next Steps
If you are observing poor attainment of height with respect to your age and other responsible factors, first of all there is need to find out the cause of poor growth, then correction of the underlying cause to attain correct height.
Health Tips
Take nutritious diet including adequate protein Vitamins minerals, exercise regularly especially walking and running, practice Tadasan and Suryanamaskar.