Low-dose pepper spray works for rhinitis

Patients can apply the spray at home rather than having to attend hospital for a higher dose, researchers say

A low-dose capsaicin nasal spray — or pepper spray — that can be self-administered once daily for idiopathic rhinitis works as well as a higher dose one administered over several hours in hospital with local anaesthetic, a new study suggests.

Researchers compared two different concentrations of capsaicin nasal spray (0.01 millimolar and 0.001 mM) self-administered once daily at home as well as the current standard of care for idiopathic rhinitis of capsaicin which is delivered in hospital.