Hi I am 25 yrs old I am much worried about my breast size which is only 32 and other friends of mine used to tease me.. can you please suggest me few medicines / creams

Your breasts are the size they are because of genetics. There are no medicines or creams to enlarge them.

They are not very good friends to tease you about breast size. Many men prefer small breasts.

Small breasts can be a distinct advantage. Less chance of bad posture and back problems. Ease of finding bras. Fashions look better with small breasts. By the way breasts size is measured less by your chest size than by your cup size. You can increase the size of your chest by building muscle.

Research all the advantages and the next time one of your friends tease you ask them if they are experiencing those problems.

But the only way to increase breast size is through surgery and implants.