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. 2019 Dec 7;28(2):155–160. doi: 10.1016/j.jsps.2019.11.009

Table 3.

The number of medications detected to have pDDIs and their corresponding ATC classes and codes (n = 6718).

First Level ATC Classification
n (%)
ATC Classification
(Second Level)
Frequency (%)
Alimentary Tract and Metabolism (A)
n = 1714 (25.5%)
Drugs for Acid Related Disorders (A02) 149 (2.2%)
Drugs for Functional Gastrointestinal Disorders (A03) 16 (0.2%)
Drugs for Constipation (A06) 2 (<0.1%)
Antidiarrheals (A07) 5 (0.1%)
Drugs Used in Diabetes (A10) 1147 (17.1%)
Vitamins (A11) 112 (1.7%)
Minerals (A12) 283 (4.2%)



Blood and Blood Forming Organs (B)
n = 1069 (15.9%)
Antithrombotic Agents (B01) 1027 (15.3%)
Antianemic Preparations (B03) 42 (0.6%)



Cardiovascular System (C)
n = 3130 (46.6%)
Cardiac Therapy (C01) 155 (2.3%)
Antihypertensives (C02) 24 (0.4%)
Diuretics (C03) 1093 (16.2%)
Peripheral Vasodilators (C04) 12 (0.2%)
Beta Blocking Agents (C07) 549 (8.2%)
Calcium Channel Blockers (C08) 204 (3%)
Agents Acting on The Renin-Angiotensin System (C09) 811 (12.1%)
Lipid Modifying Agents (C10) 282 (4.2%)
Genito Urinary System and Sex Hormones (G) Urologicals (G04) 51 (0.8%)



Systemic Hormonal Preparations (H)
n = 93 (1.4%)
Corticosteroid for Systemic Use (H02) 34 (0.5%)
Thyroid Therapy (H03) 59 (0.9%)



Antineoplastic and Immunomodulating Agents (L) Immunosuppressants (L04) 35 (0.5%)



Musculo-skeletal System (M)
n = 210 (3.1%)
Anti-inflammatory and Antirheumatic Products (M01) 39 (0.6%)
Muscle Relaxants (M03) 9 (0.1%)
Antigout Preparations (M04) 84 (1.3%)
Drugs for Treatment of Bone Diseases (M05) 78 (1.2%)



Nervous System (N)
n = 138 (2%)
Analgesics (N02) 7 (0.1%)
Antiepileptic (N03) 79 (1.2%)
Anti-Parkinson (N04) 12 (0.2%)
Psycholeptics (N05) 3 (<0.1%)
Psychoanaleptics (N06) 28 (0.4%)
Other Nervous System Drugs (N07) 9 (0.1%)



Respiratory System (R)
N = 278 (4.1%)
Nasal Preparations (R01) 38 (0.6%)
Drugs for Obstructive Airway Diseases (R03) 218 (3.2%)
Antihistamines for Systemic Use (R06) 22 (0.3%)