IMPORTANT NOTE: this information is based on the press release of This War Of Mine. It might be incomplete and could be changed in the official release.
They have a terrible taste, but can save your life if you fall ill.
To take Medications select the ill character and then left click the Medications icon on the first aid cabinet. Medications can be crafted at an Improved Herbal Workshop using 4 Herbs and 2 Med Ingredients.