I think the patch is the same as the pill called Cilest, but in patch form IYSWIM. You can only use it if you would also be able to take the combined pill, as it has oestrogen in it and not all women can take that for various reasons. The reason why the patch is not commonly heard of is because it is VERY expensive. As far as I'm aware, no family planning yet has the funds to stock it, so you can only get it via your GP who will give it on prescription. Most GP's are not going to recommend the most expensive option to you (the GP practice ends up paying for all prescriptions you see), so unless you ask for it by name (Evra, the contraceptive patch) they are umlikely to tell you about it. Its supposed to be good though, but some people are allergic to the stickiness of it, like sticking plasters / nicotine patches.