A family doctor gave me a prescription for asthma. I do not have asthma, but I did have COVID, which gave me throat pain and a cough. I only took the medication once because I read the side effects, and there were a lot of mental health risks associated with the drug, and I am already dealing with specific mental health issues. I was given the tablet Montelukast (Montelukast sodium), and I read that the drug only works if you continue to use it and let it build in your system. Since I only took it once and have no plan to retake it, am I at risk of experiencing any side effects? Please advise.