Flu-like Symptoms. Body Aches. Headache. Fever. Chills. Fatigue. Reduces Duration and Severity of Flu Symptoms. Non-Drowsy, No Side Effects. No Drug Interaction, Works Naturally With Your Body. Take Oscillo as the First Sign of Flu-like Symptoms! Oscillococcinum (o-sill-o-cox-see-num) is safe, natural and easy to take.It has been shown in clinical studies to help reduce both the duration and the severity of flu-like symptoms. Uses. Temporarily relieve flu-like symptoms such as run-down feeling, headache, body aches, chills and fever.