Trial Outcomes & Findings for Cannabidiol in Patients With COVID-19 and Cardiovascular Disease or Risk Factors (NCT NCT04615949)

NCT ID: NCT04615949

Last Updated: 2026-04-21

Results Overview

Proportions of patients in each group not having one of the outcome measures as described above (All-cause mortality, requirement for ICU admission and/or ventillatory support and cardiovascular complications)

Recruitment status

TERMINATED

Study phase

PHASE2/PHASE3

Target enrollment

90 participants

Primary outcome timeframe

28 days post randomization

Results posted on

2026-04-21

Participant Flow

Participant milestones

Participant milestones
Measure
Cannabidiol, Pharmaceutically Produced With < 5 Ppm THC
CardiolRx Cannabidiol, pharmaceutically produced with \< 5 ppm THC: CardiolRx 2.5 mg/kg to 7.5 mg/kg of body weight b.i.d taken orally with food
Placebo
Placebo Placebo: Placebo 2.5 mg/kg to 7.5 mg/kg of body weight b.i.d taken orally with food
Overall Study
STARTED
45
45
Overall Study
COMPLETED
41
37
Overall Study
NOT COMPLETED
4
8

Reasons for withdrawal

Reasons for withdrawal
Measure
Cannabidiol, Pharmaceutically Produced With < 5 Ppm THC
CardiolRx Cannabidiol, pharmaceutically produced with \< 5 ppm THC: CardiolRx 2.5 mg/kg to 7.5 mg/kg of body weight b.i.d taken orally with food
Placebo
Placebo Placebo: Placebo 2.5 mg/kg to 7.5 mg/kg of body weight b.i.d taken orally with food
Overall Study
Withdrawal by Subject
2
4
Overall Study
Lost to Follow-up
2
2
Overall Study
Death
0
2

Baseline Characteristics

Cannabidiol in Patients With COVID-19 and Cardiovascular Disease or Risk Factors

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Cannabidiol, Pharmaceutically Produced With < 5 Ppm THC
n=45 Participants
CardiolRx Cannabidiol, pharmaceutically produced with \< 5 ppm THC: CardiolRx 2.5 mg/kg to 7.5 mg/kg of body weight b.i.d taken orally with food
Placebo
n=45 Participants
Placebo Placebo: Placebo 2.5 mg/kg to 7.5 mg/kg of body weight b.i.d taken orally with food
Total
n=90 Participants
Total of all reporting groups
Age, Continuous
60.4 years
STANDARD_DEVIATION 14.86 • n=13 Participants
62.0 years
STANDARD_DEVIATION 12.95 • n=13 Participants
61.2 years
STANDARD_DEVIATION 13.89 • n=26 Participants
Sex: Female, Male
Female
19 Participants
n=13 Participants
20 Participants
n=13 Participants
39 Participants
n=26 Participants
Sex: Female, Male
Male
26 Participants
n=13 Participants
25 Participants
n=13 Participants
51 Participants
n=26 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
42 Participants
n=13 Participants
42 Participants
n=13 Participants
84 Participants
n=26 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
3 Participants
n=13 Participants
3 Participants
n=13 Participants
6 Participants
n=26 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=13 Participants
0 Participants
n=13 Participants
0 Participants
n=26 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=13 Participants
0 Participants
n=13 Participants
0 Participants
n=26 Participants
Race (NIH/OMB)
Asian
0 Participants
n=13 Participants
0 Participants
n=13 Participants
0 Participants
n=26 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=13 Participants
0 Participants
n=13 Participants
0 Participants
n=26 Participants
Race (NIH/OMB)
Black or African American
2 Participants
n=13 Participants
3 Participants
n=13 Participants
5 Participants
n=26 Participants
Race (NIH/OMB)
White
28 Participants
n=13 Participants
27 Participants
n=13 Participants
55 Participants
n=26 Participants
Race (NIH/OMB)
More than one race
15 Participants
n=13 Participants
15 Participants
n=13 Participants
30 Participants
n=26 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=13 Participants
0 Participants
n=13 Participants
0 Participants
n=26 Participants
Region of Enrollment
United States
25 participants
n=13 Participants
26 participants
n=13 Participants
51 participants
n=26 Participants
Region of Enrollment
Brazil
6 participants
n=13 Participants
4 participants
n=13 Participants
10 participants
n=26 Participants
Region of Enrollment
Mexico
14 participants
n=13 Participants
15 participants
n=13 Participants
29 participants
n=26 Participants
Obesity
19 Participants
n=13 Participants
23 Participants
n=13 Participants
42 Participants
n=26 Participants
Diabetes
17 Participants
n=13 Participants
19 Participants
n=13 Participants
36 Participants
n=26 Participants
Hyperlipidemia
7 Participants
n=13 Participants
9 Participants
n=13 Participants
16 Participants
n=26 Participants
Hypertension
30 Participants
n=13 Participants
30 Participants
n=13 Participants
60 Participants
n=26 Participants

PRIMARY outcome

Timeframe: 28 days post randomization

Population: Intention-to-treat population

Proportions of patients in each group not having one of the outcome measures as described above (All-cause mortality, requirement for ICU admission and/or ventillatory support and cardiovascular complications)

Outcome measures

Outcome measures
Measure
Cannabidiol, Pharmaceutically Produced With < 5 Ppm THC
n=45 Participants
CardiolRx Cannabidiol, pharmaceutically produced with \< 5 ppm THC: CardiolRx 2.5 mg/kg to 7.5 mg/kg of body weight b.i.d taken orally with food
Placebo
n=45 Participants
Placebo Placebo: Placebo 2.5 mg/kg to 7.5 mg/kg of body weight b.i.d taken orally with food
Composite of All-cause Mortality, Requirement for ICU Admission and/or Ventillatory Support and Cardiovascular Complications
3 Participants
2 Participants

SECONDARY outcome

Timeframe: 28 days

Population: Patients for whom the Ordinal Outcome Scale was available (only implemented after protocol amendment; not recorded for patients randomized prior to amendment)

Ordinal Outcome Scale: 1. Not hospitalized and no limitations of activities. 2. Not hospitalized, with limitation of activities, home oxygen requirement, or both. 3. Hospitalized, not requiring supplemental oxygen and no longer requiring ongoing medical care. 4. Hospitalized, not requiring supplemental oxygen but requiring ongoing medical care. 5. Hospitalized, requiring any supplemental oxygen. 6. Hospitalized, requiring noninvasive ventilation or use of high-flow oxygen devices. 7. Hospitalized, receiving invasive mechanical ventilation or ECMO. 8. MI or stroke diagnosed since randomization. 9. Death.

Outcome measures

Outcome measures
Measure
Cannabidiol, Pharmaceutically Produced With < 5 Ppm THC
n=35 Participants
CardiolRx Cannabidiol, pharmaceutically produced with \< 5 ppm THC: CardiolRx 2.5 mg/kg to 7.5 mg/kg of body weight b.i.d taken orally with food
Placebo
n=35 Participants
Placebo Placebo: Placebo 2.5 mg/kg to 7.5 mg/kg of body weight b.i.d taken orally with food
Ordinal Outcome Scale
1.40 score on a scale
Standard Deviation 1.39
1.51 score on a scale
Standard Deviation 1.85

Adverse Events

Cannabidiol, Pharmaceutically Produced With < 5 Ppm THC

Serious events: 5 serious events
Other events: 24 other events
Deaths: 0 deaths

Placebo

Serious events: 4 serious events
Other events: 23 other events
Deaths: 2 deaths

Serious adverse events

Serious adverse events
Measure
Cannabidiol, Pharmaceutically Produced With < 5 Ppm THC
n=45 participants at risk
CardiolRx Cannabidiol, pharmaceutically produced with \< 5 ppm THC: CardiolRx 2.5 mg/kg to 7.5 mg/kg of body weight b.i.d taken orally with food
Placebo
n=44 participants at risk
Placebo Placebo: Placebo 2.5 mg/kg to 7.5 mg/kg of body weight b.i.d taken orally with food
Cardiac disorders
Cardiac failure
2.2%
1/45 • Number of events 1 • 60 days
0.00%
0/44 • 60 days
Cardiac disorders
Tachycardia
0.00%
0/45 • 60 days
2.3%
1/44 • Number of events 1 • 60 days
Infections and infestations
Pneumonia
2.2%
1/45 • Number of events 2 • 60 days
0.00%
0/44 • 60 days
Infections and infestations
Septic Shock
0.00%
0/45 • 60 days
2.3%
1/44 • Number of events 1 • 60 days
Investigations
ALT increase
0.00%
0/45 • 60 days
2.3%
1/44 • Number of events 1 • 60 days
Investigations
QTC segment prolongation
2.2%
1/45 • Number of events 1 • 60 days
0.00%
0/44 • 60 days
Renal and urinary disorders
Acute kidney injury
0.00%
0/45 • 60 days
2.3%
1/44 • Number of events 1 • 60 days
Renal and urinary disorders
Renal impairment
2.2%
1/45 • Number of events 1 • 60 days
0.00%
0/44 • 60 days
Respiratory, thoracic and mediastinal disorders
Respiratory failure
2.2%
1/45 • Number of events 1 • 60 days
2.3%
1/44 • Number of events 1 • 60 days

Other adverse events

Other adverse events
Measure
Cannabidiol, Pharmaceutically Produced With < 5 Ppm THC
n=45 participants at risk
CardiolRx Cannabidiol, pharmaceutically produced with \< 5 ppm THC: CardiolRx 2.5 mg/kg to 7.5 mg/kg of body weight b.i.d taken orally with food
Placebo
n=44 participants at risk
Placebo Placebo: Placebo 2.5 mg/kg to 7.5 mg/kg of body weight b.i.d taken orally with food
Respiratory, thoracic and mediastinal disorders
Acute respiratory distress Syndrome
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Respiratory, thoracic and mediastinal disorders
Epistaxis
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Respiratory, thoracic and mediastinal disorders
Laryngospasm
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Respiratory, thoracic and mediastinal disorders
Nasal congestion
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Respiratory, thoracic and mediastinal disorders
Pulmonary congestion
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Respiratory, thoracic and mediastinal disorders
Pulmonary Fibrosis
0.00%
0/45 • 60 days
2.3%
1/44 • 60 days
Respiratory, thoracic and mediastinal disorders
Pulmonary mass
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Respiratory, thoracic and mediastinal disorders
Respiratory disorder
0.00%
0/45 • 60 days
2.3%
1/44 • 60 days
Cardiac disorders
Atrial fibrillation
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Cardiac disorders
Atrial flutter
0.00%
0/45 • 60 days
2.3%
1/44 • 60 days
Cardiac disorders
Cardiac failure
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Cardiac disorders
Left ventricular hypertrophy
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Cardiac disorders
Pericardial effusion
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Infections and infestations
Pneumonia
4.4%
2/45 • 60 days
2.3%
1/44 • 60 days
Infections and infestations
Fungal infection
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Infections and infestations
Septic Shock
0.00%
0/45 • 60 days
2.3%
1/44 • 60 days
Infections and infestations
Staphylococcal infection
0.00%
0/45 • 60 days
2.3%
1/44 • 60 days
Infections and infestations
Blood glucose increased
2.2%
1/45 • 60 days
2.3%
1/44 • 60 days
Investigations
Alanine aminotransferase increased
0.00%
0/45 • 60 days
2.3%
1/44 • 60 days
Investigations
Blood creatinine increased
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Investigations
Blood pressure increased
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Investigations
Electrocardiogram QT increased
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
General disorders
Oedema peripheral
4.4%
2/45 • 60 days
2.3%
1/44 • 60 days
General disorders
Chest discomfort
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
General disorders
Oedema
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
General disorders
Pyrexia
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
General disorders
Secretion discharge
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Investigations
Insomnia
4.4%
2/45 • 60 days
4.5%
2/44 • 60 days
General disorders
Nightmare
0.00%
0/45 • 60 days
2.3%
1/44 • 60 days
Vascular disorders
Hypotension
4.4%
2/45 • 60 days
0.00%
0/44 • 60 days
Renal and urinary disorders
Renal impairement
4.4%
2/45 • 60 days
0.00%
0/44 • 60 days
Renal and urinary disorders
Acute kidney injury
0.00%
0/45 • 60 days
2.3%
1/44 • 60 days
Renal and urinary disorders
Renal artery stenosis
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Blood and lymphatic system disorders
Anemia
4.4%
2/45 • 60 days
0.00%
0/44 • 60 days
Blood and lymphatic system disorders
Lymphopenia
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Blood and lymphatic system disorders
Neutropenia
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Metabolism and nutrition disorders
Hyperkalemia
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Metabolism and nutrition disorders
Hypokalemia
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Metabolism and nutrition disorders
Hypomagnesemia
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Musculoskeletal and connective tissue disorders
Pain in extremity
4.4%
2/45 • 60 days
0.00%
0/44 • 60 days
Musculoskeletal and connective tissue disorders
Arthralgia
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Endocrine disorders
Adrenal insufficiency
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Immune system disorders
Seasonal allergy
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Injury, poisoning and procedural complications
Accidental overdose
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Gastrointestinal disorders
Nausea
11.1%
5/45 • 60 days
4.5%
2/44 • 60 days
Gastrointestinal disorders
Constipation
4.4%
2/45 • 60 days
6.8%
3/44 • 60 days
Gastrointestinal disorders
Dyspepsia
4.4%
2/45 • 60 days
6.8%
3/44 • 60 days
Nervous system disorders
Headache
8.9%
4/45 • 60 days
6.8%
3/44 • 60 days
Nervous system disorders
Dysgeusia
6.7%
3/45 • 60 days
4.5%
2/44 • 60 days
Nervous system disorders
Dizziness
0.00%
0/45 • 60 days
6.8%
3/44 • 60 days
Cardiac disorders
Tachycardia
0.00%
0/45 • 60 days
6.8%
3/44 • 60 days
Vascular disorders
Hypertension
6.7%
3/45 • 60 days
2.3%
1/44 • 60 days
Gastrointestinal disorders
Diarrhea
4.4%
2/45 • 60 days
2.3%
1/44 • 60 days
Gastrointestinal disorders
Abdominal distension
0.00%
0/45 • 60 days
2.3%
1/44 • 60 days
Gastrointestinal disorders
Abdominal pain
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Gastrointestinal disorders
Gastroesophageal reflux disease
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Gastrointestinal disorders
Vomiting
2.2%
1/45 • 60 days
0.00%
0/44 • 60 days
Nervous system disorders
Somnolence
2.2%
1/45 • 60 days
4.5%
2/44 • 60 days
Nervous system disorders
Taste disorder
0.00%
0/45 • 60 days
2.3%
1/44 • 60 days
Respiratory, thoracic and mediastinal disorders
Respiratory failure
4.4%
2/45 • 60 days
2.3%
1/44 • 60 days
Respiratory, thoracic and mediastinal disorders
Cough
0.00%
0/45 • 60 days
4.5%
2/44 • 60 days

Additional Information

Andrea B. Parker, MSc. PhD, Senior Director Clinical Operations

CardiolRx

Phone: +1 289 9100862

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place