I’ve tried N-Acetyl-L-Cysteine for over 3 weeks now and have noticed my eye tics have improved over 90%. It worked almost immediately for me but wanted to give it some time before reviewing just in case but I am still feeling soooo much better. I barely have the urge to blink, I don’t think about blinking every second of the day, and I no longer get intense headaches because of my constant blinking. I have no idea how this pill which is basically magnesium would help me this much but it does. I cannot promise it will work for you but it does not hurt to try. If I can at least help one person with a similar condition to mine it would make me so happy because I know the struggle. Thank you N-Acetyl-L-Cysteine!