Cannabis Use and Concert Attendance: Safety Considerations
Attending concerts while using cannabis poses significant safety risks, particularly for someone just starting a new medication, and should be avoided or approached with extreme caution. The combination of cannabis effects, potential drug interactions with the new medication, and the concert environment creates multiple hazards that can compromise both immediate safety and health outcomes.
Primary Safety Concerns
Acute Physiological Effects
Cannabis causes several acute effects that are particularly problematic in concert settings 1:
- Elevated heart rate and blood pressure - concerts themselves are stimulating environments that further increase cardiovascular stress
- Anxiety and memory impairment - can impair judgment and ability to respond to emergencies
- Impaired reaction time and coordination 1 - increases fall risk and injury potential in crowded venues
The cardiovascular risks are especially concerning. Cannabis smoking is associated with myocardial infarction and stroke 1, and acute cannabis toxicity can cause myocardial ischemia or infarction 1. A concert environment with loud music, crowds, heat, and physical exertion compounds these cardiovascular stressors.
Drug Interaction Risks
Starting a new medication while using cannabis creates unpredictable drug-drug interaction risks 2. Without knowing the specific medication, it's impossible to rule out:
- Enhanced sedation if the medication has CNS depressant effects
- Altered metabolism affecting either drug's efficacy or toxicity
- Additive cardiovascular effects
Cannabis products should be avoided when using other CNS depressants like benzodiazepines or alcohol 2, which are commonly consumed at concerts 3.
Concert-Specific Hazards
Research on concert-related emergency department visits reveals critical patterns 3:
- 96% of concert-related ED visits were substance-use related
- Mean blood alcohol levels reached 242 mg/dL among intoxicated patients
- 61% required medical interventions including IV fluids, medications, and specialty consultation
- Two patients required intubation
- Electronic dance music and pop concerts showed the widest ranges of consciousness impairment
When cannabis is combined with alcohol (common at concerts), the risks multiply substantially. The most common complaints in cannabis-attributable ED visits are gastrointestinal issues, psychiatric complaints, and intoxication 4.
Specific Recommendations
If Concert Attendance Cannot Be Avoided:
Do NOT use cannabis before or during the concert if:
- You have any history of heart disease, angina, or prior myocardial infarction 5
- You have anxiety, depression, or any psychiatric history 1
- The new medication has any CNS effects or cardiovascular effects
- You plan to consume alcohol or other substances
- You will be driving to or from the venue 1
Harm reduction strategies if cannabis use continues 2:
- Use the lowest effective dose only
- Avoid high-potency products (≥10% THC) 2
- Do not combine with alcohol or other substances
- Ensure a sober companion is present
- Stay hydrated but avoid overhydration
- Have a plan for immediate medical access
- Do not drive or operate any machinery
Critical Pitfalls to Avoid:
Underestimating THC potency - average THC concentration has nearly doubled from 9% in 2008 to 17% in 2017, with concentrates reaching 70% 1. Edibles can cause delayed, prolonged effects.
Ignoring medication interactions - clinicians must evaluate drug-drug interactions before any cannabis use 2
Combining substances - the concert environment often involves alcohol, which dramatically increases risk 3
Dismissing cardiovascular risk - daily cannabis use increases coronary heart disease risk (2.0% vs 0.9%), myocardial infarction (1.7% vs 1.3%), and stroke (2.6% vs 1.0%) compared to nondaily use 2
Clinical Bottom Line
The safest recommendation is to avoid cannabis use entirely when starting a new medication and when attending concerts. The unpredictable drug interactions, acute cardiovascular and neurological effects of cannabis, the high-risk concert environment with substance polyuse, and documented patterns of concert-related medical emergencies create an unacceptable risk profile. If the patient insists on attending, they should abstain from all substances, ensure medical information is accessible, and have a sober companion present. The new medication should be discussed specifically with their prescribing physician to assess interaction potential before making any decisions about cannabis use.