Caffeine as adjuvant therapy for Tension-Type Headache: A systematic review. Headache Medicine, [S. l.], v. 14, n. Supplement, p. 114, 2023. DOI: 10.48208/HeadacheMed.2023.Supplement.114. Disponível em: https://headachemedicine.com.br/hm/article/view/959. Acesso em: 22 jan. 2026.