Some nights are too big to miss even if you're feeling a little off. There's “Too Sick” – groggy, bundled up, and zombified – and “So Sick”—sleek, glammed out, and Halloween-party ready – thanks to Mucinex Nightshift. 
We dared TikTok to show us their sickest before-and-after costume looks. We were the first OTC brand onto TikTok, which seemed pretty radical back in 2019.