I am 23yr south indian boy and weigh only 45kg.. suggest some tips to increase my weight in 15days

If you want lose some fat your body than you will use this products... I was eat this because my weight is so over so I am facing big problem daily routine work.. my friends tell me about this so I used some days it worked for me.. now I am very happy and my weight so down..
Natural Detox (http://naturaldetoxcleanse.net/natural-detox-cleanse-review-find-the-best-natural-colon-cleanse)