Hello,
I understand your concern, but sorry to say that there is no medicine to increase hieght at this age.
Next Steps
You can try good posture.
Excercise regularly.
Health Tips
Once your growth plates become fused together, which happens before 21years of age in males, there’s no chance that you can increase your height, regardless of what the supplement label advertises. so be careful while going behind any supplement which promises height increase.