Hello,
I wish I could tell you how long it took, but I started MMS back in 2012 and was mostly concerned about the cyst in my liver, as it would have caused me a whole lot of pain soon, it was growing 1/4 inch a year, it was 6 inches across. It took 3 drops a day (or the equal in capsules) more than a year to completely dissolve. The cysts in my breasts disappeared as a side, and I only knew about it when I had a mammogram 4 months ago.... although I did know all along, as my breasts quit hurting, but it wasn't very important to me. However, if you think of my liver cyst being larger than a grapefruit and in one year it was the size of a marble, that tells me it shouldn't take so long for breast cysts, I'd recommend taking one capsule a day That one capsule will keep your body operating at top levels, and it's no big deal to take it, just remember that taking with distilled water is imperative.
Doctors know of no cure for breast cysts or liver cysts, so they will give you the third degree when you show up minus old cysts. I won't tell my doctor as I don't trust him, I think he would try to scare me from taking anymore, and I am a firm believer that MMS is incredible.