The Drug-Induced Cardiotoxicity Website and App

Marijuana, cannabis (haschish, hash, bang, dab)

Some adverse effects of marijuana may overlap with those of tobacco smoke. Not all studies confirmed whether marijuana per se is harmful to the airways (PMID 29629404). Variation in cannabis/marijuana/haschich potency, concentration (e.g. resin, hash oil), contamination with fungi (PMID 6348548) and possible adulteration should be considered (PMID:18494838). Reviews at PMID 24831571, 24897085, 25996274, 26935046, 29629404, 29971337. Some users vaporize cannabis using electronic cigarette devices (PMID 30835796)

Frequency - Incidence

Incidence of cardiac adverse event(s) due to the specific drug as assessed by number of reported/published cases in the literature. Red digits in stars indicate: 0 = Very rare, questionable signal · 1 = < 10 cases · 2 = 10-50 cases · 3 = 50–100 cases · 4 = 100-200 cases · 5 = >200 cases

Evidence level/grade

Evidence level for cardiac adverse event(s) due to the specific drug as estimated using Hill’s (1965), Naranjo’s (1981), and Bégaud’s (1985) criteria applied to published cases. Blue digits in stars indicate: 0 = Questionable · 1 = Low · 2 = Moderate · 3 = Robust · 4 = Definite · 5 = Unquestionable, pathognomonic

II - Cardiac arrhythmia(s)/dysrhythmia(s) (AF, VT, VF, TdP) - QTc prolongation)

III - Myocardial ischemia - Coronary artery disease

IV - Heart block (bundle branch-, AV-block)

V - Myocarditis

XII - Pericardial involvement

XIV - Pleural involvement

XV - Chest pain

XVI - Hemorrhage - Bleeding - Hematoma

XXI - Mediastinal involvement/injury

XXII - Acute respiratory/cardiorespiratory failure

XXIV - Interstitial lung disease - Pulmonary infiltrates - Pulmonary fibrosis

XXIX - Small airway involvement

XXXVI - Autoimmune syndromes - Systemic reactions or conditions

XXXVIII - Miscellaneous - Varia