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Table 4 The most severe and highest risk potential DDIs that were identified

From: Prevalence and factors associated with potential drug-drug interactions in prescriptions presented at private pharmacies in Mbarara city, southwestern Uganda

Potential DDI

Potential Duration of concomitant therapy

Risk category

Severity

Potential adverse effects

Doxycycline + Isotretinoin

14 days

X

Major

Intracranial hypertension

Domperidone + Clarithromycin

7 days

X

Major

QTc- prolongation, sudden cardiac death

Celecoxib + Ibuprofen

3 days

X

Major

Gastrointestinal ulceration and bleeding

Spironolactone + Potassium Chloride supplements

7 days

X

Major

Severe hyperkalemia

Rivaroxaban + Aceclofenac

5 days

D

Major

Excessive/Uncontrolled bleeding

Morphine + Pregabalin

30 days

D

Major

Slowed or difficult breathing, Respiratory depression

Tramadol + Gabapentin

5 days

D

Major

Slowed or difficult breathing, Respiratory depression

Dolutegravir + Carbamazepine

60 days

D

Major

Treatment failure due to diminished efficacy of Dolutegravir

Haloperidol + Chlorpromazine

30 days

D

Major

Arrhythmias, Torsades de Pointes

Morphine + Chlorpheniramine

5 days

D

Major

Slowed or difficult breathing, Respiratory depression