Ive never heard of it, and have never heard of anybody using it to increase their milk supply either.
When I B/F Lewis I found that If I didnt eat the right foods or drink much milk, then my boobs didnt seem as full the next day. If I did eat properly and drink plenty of milk then they did (Bit strange really lol).
I also took a supplement called Nutritous Breast Milk, and that contained all the essential vitamins that me and Lewis needed, plus a capsule of Omega 3 a day which is supposed to be really good too.
I bought them from boots, so there easy to get hold of and If you sign up as a member of boots parenting club you often get money off vouchers towards them lol