Simply Raspberry Ketones. Before you buy, it is important that you find out if there are any known raspberry ketones side effects. Whilst this natural weight loss supplement is enjoying a phenomenal rise in popularity and sales, it is still important to know if it poses any potential health risks to its users. If you’re using it for the first time, this is an important consideration. Losing weight with raspberry ketones is possible but doesn’t work for everyone. Find out how to make it for you.