170
Participants
Start Date
October 1, 2019
Primary Completion Date
June 13, 2025
Study Completion Date
June 30, 2026
Botulinum toxin type A
Botulinum toxin 25 Allergan units in 0.5 ml Sodium Chloride (NaCl) 0.9 % Braun. Two injections, one in each side of the face, and targeting the sphenopalatine ganglion.
placebo
0.5 ml Sodium Chloride (NaCl) 0.9% Braun. Two injections, one in each side of the face, and targeting the sphenopalatine ganglion.
Haukeland University Hospital, department of Neurology, Bergen
Nordland Hospital, department of Neurology, Bodø
Nevroklinikken Universitetet i Oslo, Oslo Universitetssykehus HF, Oslo
St Olavs Hospital, Trondheim University Hospital, Trondheim
Norwegian University of Science and Technology
OTHER
Oslo University Hospital
OTHER
Haukeland University Hospital
OTHER
Nordlandssykehuset HF
OTHER
St. Olavs Hospital
OTHER