Table 3.
Summary of ATC classes and drug involved in drug-related problems.
| ATC class | Total, n = 385, n (%) | Example of most frequent drug, (n) |
|---|---|---|
| Cardiovascular system | 106 (27.5) | Atorvastatin (26), simvastatin (10), amlodipine (10), metoprolol (9), enalapril (9) |
| Anti-infectives for systemic use | 104 (27.0) | Piperacillin and tazobactam (11), ceftazidime (10), azithromycin (10), meropenem (7), levofloxacin (6) |
| Alimentary tract and metabolism | 61 (15.8) | Omeprazole (25), metformin (9), sodium carbonate (4), human Insulin/ Isophane Insulin (3), glipizide (2), calcitriol (2) |
| Blood and blood forming organs | 43 (11.2) | Warfarin (17), folic (6), aspirin (5), clopidogrel (4), enoxaparin (3), ferrous fumarate (4) |
| Respiratory system | 25 (6.5) | Salmeterol and fluticasone (10), formoterol and budesonide (6), tiotropium bromide (3), fenoterol and ipratropium bromide (3), theophylline (3) |
| Nervous system | 19 (4.9) | Phenytoin (4), tramadol (2), nortriptyline (2), lorazepam (1), sertraline (1), fluoxetine (1) |
| Genitourinary system and reproductive hormones | 6 (1.6) | Alfuzosin (4), finasteride (1), tamsulosin (1) |
| Musculoskeletal system | 6 (1.6) | Allopurinol (2), colchicine (2), tolperisone (1), febuxostat (1) |
| Antiparasitic products, insecticides and repellents | 5 (1.3) | Metronidazole (3), hydroxychloroquine (1), ivermectin (1) |
| Systemic hormonal preparations | 4 (1.0) | Prednisolone (3), methimazole (1) |
| Various | 4 (1.0) | Calcium folinate (3), calcium polystyrene sulfonate (1) |
| Antineoplastic and immunomodulating agents | 2 (0.5) | Leflunomide (1), methotrexate (1) |
ATC anatomical therapeutic chemical classification system.