Hello Sir...iam 23 Years Old..sex Is Female..my Wieght Is Jst

hello sir...iam 23 years old..sex is female..my wieght is jst 36kgs...all of us says ur looking so lean...i know iam so lean to compare my age..before one year i used practin and dexona each two tablets everyday...after that using one month i gain wieght and also lokking good..after that i stopped using that tablets i loss my wieght..and came before position.. so i kindly request you how to use that tablets to gain my wieght ? and any side effects using that tablets ? and any solution to quick gain my weight in 2 or 3 months ? please suggest me sir what i used ? and also present days i used enduramass product..bt there is no result sir...please suggest me how can gain body weight in 2 or 3 months..quick result to me sir please...