Is there an age group for consuming Wigobi Maunzaro?

I am raising a child. My child is currently in elementary school and has gained a lot of weight. I have had them exercise and tried various foods said to be effective for dieting, but they haven't really had much effect. Perhaps because they are still young, it hasn't had a significant impact. I am very worried, so I am also agonizing over whether it is safe to give them Wigobi and Maunjar. I am really concerned about whether there is a specific age range for Wigobi and Maunjar, or what I should do. I cannot just leave my child as they are, nor can I neglect them; I want to help them lose weight as quickly as possible to get rid of the "obesity bacteria." I would be grateful if you could consider my situation as a parent and provide a thoughtful and valuable response.