Hello Thank You for contatcing HCM. Yasmin is almost equal to Rigevidon. Effec of weight also varies from person to person. For some patients yasmin causes more weight gain & vice versa. To stop weight from gaining you need to take care of two things apart from medicine: First, your daily calories intake should be less than the maximum calories recommended at a particular weight/height. Second, eat diet with less calories. e.g avoid chocolates, oily & fast food. Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. I will be happy to answer your questions. If you do not have any clarifications, you can close the discussion and rate the answer. Wishing you good health.