Benzydamine in Sore Throat Pain Relief (BePaiR Study)

Inclusion Criteria: * Adult male and female patients (aged 18 - 75 years, limits included) with recent onset (≤3 days) of sore throat and a diagnosis of tonsillopharyngitis confirmed by: 1. Presence of at least one symptom of URTI in the previous 24 h on the URTI questionnaire; 2. Sore throat pain intensity score ≥ 60 mm on Sore Throat Pain Intensity Scale (STPIS); 3. A score ≥ 5 on Tonsillo-Pharingytis Assessment (TPA); * Women of childbearing potential or with no menses for a period \< 12 months must have a negative pregnancy test at Visit 0 and have to agree not to start a pregnancy from the signature of the informed consent up to the Visit 2, using an appropriate birth control method such as combined oestrogen-progestin containing hormonal contraceptives (e.g., oral, injectable, transdermal), progestin-only hormonal contraceptives (e.g., oral, injectable, implantable), intrauterine device (IUD) or Intrauterine hormone-releasing System (IUS) in combination with male condom, bilateral tubal occlusion, vasectomised partner, sexual abstinence. The following definitions will be considered: * Woman of childbearing potential (WOCBP): i.e., fertile, following menarche and until becoming post-menopausal, unless permanently sterile. Permanent sterilization methods include hysterectomy, bilateral salpingectomy and bilateral oophorectomy. * Patients legally capable of giving their consent to participate in the study (including personal data processing) and available to sign and date the written informed consent. Exclusion Criteria: * Known hypersensitivity to benzydamine or its excipients; * Phenylketonuria; * Clinically significant abnormalities at physical examination and vital signs; * Intolerance to acetylsalicylic acid or other NSAIDS; * History or diagnosis of asthma; * Any concomitant disease that compromise breathing (i.e. bronchopneumonia); * Mouth breathing due to nasal congestion which causes throat drying; * Severe coughing which causes throat discomfort; * Purulent plaques on the tonsils; * Any inhaled therapy in the previous week before the first drug administration; * Use of antibiotics for an acute disease in the 7 days before randomisation (chronic antibiotic use, such as for acne, is acceptable); any sustained release analgesic within 24 hours of administration of study medication; any medications for cold and flu (i.e., decongestants, antihistamines, expectorants, antitussives), immediate release analgesic or antipyretic within 4 hours of administration of study medication; * Use of any lozenge, mouthwash, spray or menthol-containing products within 2 hours of administration of study medication; * Women during pregnancy or lactation period; * Subject involved in the conduct of the study (e.g. Investigator or his/her deputy, first grade relatives, pharmacist, assistant or other personnel, etc); * Participation to a clinical trial within 3 months prior to the inclusion in the study.