Thanks for the query,
You are 28 years and by now the fusion of your bones would have been complete.
There is no remedy to increase growth now.
Please dont go for various claims.
Same goes for size of penis.
It is genetically determined and the size cannot be increased.
Please meet a dermatologist
for exact diagnosis.
Let me know if you have any other doubt.
you can ask a direct question to me on this forum, following the below link.
Wishing you good health,