Worst Experience of My Life - Felt Like I Was Going Completely Insane

I was only on Biaxin XL for two days for a sinus infection and the horrible side effects hit me all at once last night. It may have also been due to the fact that I cut up the first two pills because I have trouble taking pills - so maybe that made the medicine go into my system a lot faster. At first I was a little out of it, a bit of trouble focusing but I didn't think much of it. I got really sad that night but I figured it was due to other things. Then the second day I took the pills whole and that night was honestly the most terrifying night of my life. I was not myself at all, I felt like I was losing touch with reality, I couldn't slow my mind down and I felt like I was losing my mind. It was incredibly scary. I have absolutely no history of mental illness or instability or anything of the sort. I felt like I was having a mental breakdown - I was terrified to be alone because I was worried I would do something to harm myself. I couldn't sleep because I couldn't stop my mind from reeling. It persisted until about midday today, and now that I've stopped taking the pills I feel a lot better. I'm just drinking a lot of water and trying to get this out of my system asap. Thank god I only took four pills total before this got any worse. It is not worth the side effects, I would rather suffer from a sinus infection my whole life than deal with the mental breakdown this caused me.