Find the following items within the first 3 doors to create the dosage required. Then proceed into the last door to the right to provide your medicine and await the results.

Purple Dosage
Glue and Old Cheese

Green Dosage
Bleach and Glue

Yellow Dosage
Torn Shoe and Glue

Blue Dosage
Bleach and Old Cheese

Dark Red Dosage
Torn Shoe and Old Cheese

Red Dosage
Torn Shoe and Bleach

Good Manners
Simply go into the first room, all the way to the right and press E on the toilet

Welcome To The Community
Simply click on the front home screen of the game to join the discord community