Falling victim symptoms and conditions

Our son started taking Singulair when he was 2 for severe allergic rhinitis and cough variant asthma (in addition to Zyrtec, which didn’t control all of his symptoms). He is 5 now. For the last three years, he has been an increasingly violent, difficult, defiant, argumentative, volatile child who has intense mood swings--one minute he’s laughing uncontrollably, the next he’s weeping over nothing. His doctor and therapist recommended that we see a psychiatrist to have him evaluated for bipolar disorder, which used to be unknown in children. Because he has such chronic sleep problems, the doctor also suggested we take him off Singulair (and increase his Zyrtec dose) to see if it improved his sleep issues. Within a week, he was sleeping much better and was a calmer, happier, gentler boy. He suddenly could take “no” for an answer without flipping out and trying to hurt me. We thought that we were just in an unusual, calm window that would shift either to mania or intense sadness or both, any minute. We also thought that his behavior change might be due to sleeping better. We were enjoying the rare reprieve. Over the last weekend, his springtime allergies really flared up. We gave him Singulair on Monday and by noon, he was completely out of control. I had to strap him into his car seat at one point to keep him from hurting either me or himself. It finally occurred to me that Singulair might be causing his “bipolar” disorder. Of course, we stopped the Singulair. After two days he was a new boy. Yesterday, I Googled “Singulair bipolar children” and got a few hits. I am stunned to read how similar other families’ experiences have been to ours and I feel sick that we gave this drug to our child for three years.

Who would think an antibiotic would have such effects? I have been experienceing pain in my shoulder for about 3 weeks. This began less than 2 weeks after taking Levaquin for 2 weeks. In addition to that, I experienced side effects during the treatment. This include chest pressure and rapid heartbeat.

Yesterday, I saw an orthpaedist who diagnosed me with a rotator cuff injury.
I have one month of physical therapy to endure 3x per week now. If the pain doesn't improve in 2 weeks, then an MRI will be done. If it is ruptured, there will likely be surgery.

I am a healthy 35 year old woman with no history of shoulder problems. The doctor and others have asked what did I do to hurt myself. My answer is that I made the mistake of taking a drug that shouldn't be on the market. I don't lift weights and I didn't pitch 9 innings before this. So the only connection is a drug whose website states "ruptures of the shoulder, hands, and Achilles tendons have been reported...".

I have woarned all of my friends and co-workers about this drug. I am now on a crusade to prevent others from falling victim to this drug. I understand that the risks to the few outwiegh the rewards to many. However, when you are one of the few who is affected, your viewpoint changes. I am an educated woman and did read the side affects prior to taking the drug. I knew this was a possibility but it was "rare". Who knew an antibiotic could be so helpful and harmful at the same time!