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. Author manuscript; available in PMC: 2023 Mar 23.
Published in final edited form as: NEJM Evid. 2022 Apr 30;1(6):10.1056/evidoa2200014. doi: 10.1056/evidoa2200014

Table 3.

Adverse Events Reported by System Organ Class and Preferred Term with an Incidence of 3% of Participants or Greater in All Treatment Groups, Safety Population.*

System Organ Class and Preferred Term Placebo
(n=56)
Mid-Dose PHEN/TPM
(n=54)
Top-Dose PHEN/TPM
(n=113)
Overall
(N=223)
Any treatment-emergent adverse event 29 (51.8) 20 (37.0) 59 (52.2) 108 (48.4)
Infections and infestations 15 (26.8) 9 (16.7) 25 (22.1) 49 (22.0)
 Covid-19 4 (7.1) 2 (3.7) 4 (3.5) 10 (4.5)
 Upper respiratory tract infection 4 (7.1) 1 (1.9) 4 (3.5) 9 (4.0)
 Nasopharyngitis 3 (5.4) 1 (1.9) 2 (1.8) 6 (2.7)
 Gastroenteritis viral 2 (3.6) 1 (1.9) 1 (0.9) 4 (1.8)
 Influenza 0 2 (3.7) 2 (1.8) 4 (1.8)
Nervous system disorders 7 (12.5) 5 (9.3) 16 (14.2) 28 (12.6)
 Headache 5 (8.9) 4 (7.4) 5 (4.4) 14 (6.3)
 Dizziness 0 1 (1.9) 4 (3.5) 5 (2.2)
Gastrointestinal disorders 8 (14.3) 7 (13.0) 12 (10.6) 27 (12.1)
 Abdominal pain 2 (3.6) 0 0 2 (0.9)
 Nausea 2 (3.6) 2 (3.7) 5 (4.4) 9 (4.0)
Respiratory, thoracic and mediastinal disorders 7 (12.5) 4 (7.4) 13 (11.5) 24 (10.8)
 Nasal congestion 4 (7.1) 3 (5.6) 3 (2.7) 10 (4.5)
 Oropharyngeal pain 2 (3.6) 0 3 (2.7) 5 (2.2)
General disorders and administration site conditions 3 (5.4) 2 (3.7) 13 (11.5) 18 (8.1)
 Pyrexia 1 (1.8) 1 (1.9) 5 (4.4) 7 (3.1)
Injury, poisoning, and procedural complications 5 (8.9) 5 (9.3) 7 (6.2) 17 (7.6)
 Ligament sprain 0 2 (3.7) 2 (1.8) 4 (1.8)
Psychiatric disorders 1 (1.8) 4 (7.4) 10 (8.8) 15 (6.7)
 Depression 0 1 (1.9) 5 (4.4) 6 (2.7)
Musculoskeletal and connective tissue disorders 1 (1.8) 4 (7.4) 10 (8.8) 15 (6.7)
 Arthralgia 0 1 (1.9) 4 (3.5) 5 (2.2)
 Back pain 2 (3.6) 0 2 (1.8) 4 (1.8)
Vascular disorders 2 (3.6) 0 2 (1.8) 4 (1.8)
 Hypertension 2 (3.6) 0 2 (1.8) 4 (1.8)
*

Data are no. (%). The mid and top doses are 7.5 mg/46 mg and 15 mg/92 mg of phentermine/topiramate (PHEN/TPM), respectively. The denominator for percentages is the number of participants in the safety population. The MedDRA Dictionary (version 23.1) was used for coding. If a participant experienced more than one episode of an adverse event, the participant was counted only once within a preferred term. If a participant experienced more than one adverse event within a system organ class, the participant was counted once for each preferred term and once for the system organ class.