Terbinafine
"Absolutely awful side effects for me after taking for just 6 days. Insomnia (it's 4am and I'm wide awake right now, if that tells you anything), diarrhea and vomiting (both of which I had within the past hour), and exacerbating my pre-existing depression and anxiety, inducing a very negative generalised sense of unease and dysphoria. What's more, apparently it takes months and months to get this poison out of your system entirely, even after taking it for just a few days. If I can deter just one person out there from starting this medication, it's worth it: this drug is the stuff of nightmares and should be pulled from the market. Buyer beware, it's not worth the risk. Read all the negative reviews out there."