First of all, avoid consuming any over the counter medication
which claim to boost your growth hormone
& increase height...it may be harmful.
Height of an individual is determined by Genetics, Environmental & Nutritional factors and Hormonal
factors (most important the Growth Hormone secreted by pituitary gland
An individual stops growing in height after the fusion of the Epiphyses (growth plates) of the long bones, which occurs by the age of 19-23 yrs in males.
And as you are already 30 yr old, height cannot be increased any further, except operative procedures.
Wishing you Good Health.
Thanks and take care.