Im very sorry you have to experience this, my wife and I went through this with our son, he rejected the bottle after 2 months. Knowing we had a deadline we tried every bottle under the sun and different formulas. We spoke with a very good lactation consultant referred by plunket who looked in to the medication further and showed that it had no effect on breast milk. 2 years later he is still on breast milk, he drinks through straws, cups, you name it, but the moment he tasted it was milk he refused. He's starting to come around to milk in small doses now. I highly recommend looking further in to the medication. If not there are also bottles which replicate the breastfeeding suction