best cholesterol medication

My sister is in the US now though she has a big problem about her weight. Before she left from Philippines, she wasn’t fat but now, she added fifty pounds. She said, the way they eat and most of the foods are high in cholesterol. She is really worried about it but it is difficult for her to avoid those foods. I told her to take the best cholesterol medication. In that way, it will help to prevent from not gaining too much.