Yes, it is possible to take Vicks Nyquil to help relieve symptoms of COVID-19. However, it is important to note that Vicks Nyquil comes in different formulations, some of which may contain ingredients that could interact with other medications you are taking. It is recommended to consult with a pharmacist to ensure the specific Vicks Nyquil product you are considering is safe for you to use. Additionally, for congestion relief, you can try nasal saline solutions like Hydrasense or Sinus Rinse, which can help clear nasal passages effectively. Remember to stay hydrated and avoid taking multiple medications containing the same active ingredients.