stuffy nose7

For a stuffy nose, Sudafed may relieve congestion; 2 grams of spirulina may also reduce nasal congestion and related symptoms. 1

• Sudafed: It can reduce congestion by dilating the nasal passages, but may cause dehydration and interfere with sleep. 2
• Spirulina: In human studies, 2 grams was associated with less nasal obstruction and itching, improved smell and sleep, and reduced inflammatory cytokines. The proposed mechanism includes reducing mast-cell and histamine activity, which may ease nasal inflammation. 3