I was on 5mg of Brethine every four hours from my 26th week of pregnancy. I delivered at 34 weeks. My son was very difficult to wake and had a poor suck swallow reflex. He would not open wide and had trouble latching for weeks. I also noticed my milk supply took a bit longer. It was about 5 days and I was double pumping every hour without fail. If there is anything else please let me know. As for the ADV kits... I too have noticed less output. About 1 1/2 oz. I informed my rep and she said the kits are all the same. She also said I should keep trying that it was prob. a one time thing. I don't think so! I also heard they would no longer carry the old kits after all the stock of old kits are gone. Any one else hear this? Michelle Ramsey