My sister is 21 years old and she is 1m5.I think she is too short. Anyone know how make to she taller? Help! Thank you very much!

Stretch her on a rack.

Make the best of what you have. Does she like horses? Hopefully she weighs 50 kgs or under.

There are vitamins that helps teenager growth/develop.

At age 21 she likely has her full height, altho I have know girls who continued to grow until they wre 24.
Sorry to say, that there is nothing that will cause her to grow taller than she was meant to be.

There are some exercises which will help her to increase height. But as i think it is almost impossible to increase height after 21 years of age.

Hey if u are searching medicines to be taller then leave this try. Because it is a heredity issue also. Instead of going with any medicines u should go with some exercise as i told u. It will effect in some way.
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growing tall is a process which is age restricted...do you think it is possible after 20?I mean an inch or two may help with calcium boosters and exercises like swimming and cycling but otherwise that it can be possible.

Health Advocate