Merc symptoms and conditions

I was surprised to hear that Merc, the maker of singulair update their side effects 4 times in one year to include depression, anxiety, suicide, and suicidal thoughts. It was prescribed to me cos of my allergies and asthma. I never really took singulair on a daily basis because it made me feel so tired and out of it. So i would only take it when my allergies were very very bad, like having a bad sneezing fit or nose would be runny non stop which would be at least 1 to 2 times a month. My asthma wasn't really that bad, i would get it when my allergies would act up like i mentioned before. When the fires in California were going on my asthma started acting up because of all the ash in the air. I was having asthma attacks every day. Since singulair works great for asthma i started to take it everyday and noticed my asthma went away. The first couple days were fine..and after two weeks i started noticing i was becoming anxious and irritable. Also depression sunk in...So i wondered what was causing it. I wasn't going trhough any major life changes. So i looked up singuliar side effects and noticed the four new side effects that i mentioned above...I stopped taking the pills to see what would happen and i felt emotionally better but the asthma came back..id rather suck on my inhaler then be anxious and depressed.