12 Best Natural Immunity Boosters For Cold And Flu This Winter 8. Make a homemade cough syrup Mix 1⁄4 cup honey and 1⁄4 apple cider vinegar; mix well and take 1 tbsp every 4 hours. Page 8 of 13Previous 12345678910111213Next See more Previous article Peanut Butter Snowballs Next article Signs You Might Have Type 2 Diabetes