I am 29. This is my second time on Dianette. The first time, 4 years ago, I went on Dianette for a year. My skin was amazing, my boobs got bigger, I hardly gained weight. But I noticed it made me slightly depressed after about 6 months on it, and this got worse. So I switched to Yasmine which kept my skin under control after Dianette had kick started my clear skin. Yasmine didn't effect my mood, so I stayed on Yasmine for 2.5 years.
(Note: I did not go from Dianette to NO PILL at all, which I believe can lead to acne returning v severely. Instead I transitioned to Yasmine, which kept my acne under control)
Then, about 8 months ago while still on Yasmine my acne came back. I recognized the signs, lumps appearing, so switched from Yasmine straight back to Dianette. I have been on Dianette now for 8 months, and my skin is amazing. My boobs went up a size. I gained 3-4 lbs in first 2 months but I now I am back to normal weight, possibly skinnier. (And for me clear skin more important than gaining a few lbs anyway.)
My MOOD has been completely normal this time round. I feel great. But I watch myself closely. My doc says 6 months on Dianette would be enough to give me good skin for a year or more anyway, but am in no rush to come off it now.
SEX DRIVE- no change. If anything, it's increased. I was once on Microgynon which left me with no sex drive at all, and also made me depressed, so I know the signs.
If you have Acne I feel there is no better treatment.