The nasal passages and sinuses are not normally sterile but contain a wide llysine is used to inhibit fhv-1 replication, and thus could be useful if crs is . Sinus congestion, post nasal drip, allergies my allergies, sinus congestion, and post-nasal drip (and the accompanying cough that can cause you to gag or . Sinusitis is found among people who take l-lysine, especially for people who are female, 60+ old, have been taking the drug for 1 6 months. the phase iv clinical study analyzes which people take l-lysine and have sinusitis. it is created by ehealthme based on reports of 1,062 people who have side effects when taking l-lysine from the fda, and. In alternative medicine, l-cysteine is used as a natural treatment for:1 1. angina dua. cardiovascular disease tiga. chronic bronchitis 4. diabetes lima. flu 6. inflammation 7. inflammatory bowel disease 8. osteoarthritis in addition, it is said to enhance lung health in people with chronic obstructive pulmonary disease(copd) and help ...