I'm 31 years old, is there any medicines to...

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Regarding your question,

Drugs to increase height after 30 years

Actually, there are no proven drugs to increase height after age of 30 years and all products you hear are just for advertising issues. Due to closure of epiphyses of bones, there is no chance of bone elongation with drugs after the mentioned age.

Advice

At limited patients, doctors can use surgical interventions to increase height.
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