Nasal Guard NasalGuard Cold & Flu Block is a new & innovative way of blocking out air-borne allergens which develop cold & flu symptoms. NasalGuard Cold & Flu Block has a patented formulation using a positively charged gel to block up to 99% of negatively charged airborne particles and viruses before they enter the nasal passages.

NasalGuard Cold & Flu Block is a drug-free gel that is intended to trap, hold and immobilise airborne viruses. Thereby minimising the inhalation of cold, flu and other airborne viruses from entering the nose, which helps reduce the likelihood of becoming sick.