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Potential Risks and Side Effects

Each person responds differently

Like any medical option, the efficacy of marijuana may vary, and possible side effects exist. The effectiveness of a product will be dependent on your personal response and sensitivity to the chemical makeup. It is important to work with a patient care representative at the dispensary to help match products to your unique needs.

Dosing 101

Determining the optimal dose that will work best requires making adjustments along the way. What works for one person may not work for another; it also depends upon your level of comfort. Finding a balanced ratio of CBD and THC that creates the right combination of both compounds is the goal. The basic principle for dosing medical marijuana is "start low and go slow."

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You should also be aware that marijuana use may cause short-term effects related to:  



Short-term memory impairment has been associated with THC consumption.


Sense of time

Marijuana has been shown to distort an individual’s perception of time, typically slowing time down.


Sensory perception

THC has been found to interact with receptors in one’s brain to heighten sensory perception.


Attention span

Long-term marijuana use can have an adverse effect on attention span.



Marijuana can diminish or impair an individual’s problem-solving skills.


Verbal fluency

Long-term marijuana use can have an effect on one’s verbal memory or ability to recall words.


Reaction time

Marijuana has been shown to impair one’s reaction time.


Psychomotor control

Certain psychomotor skills may be influenced by marijuana use.

Ask your doctor if your use of the following medications should be adjusted with the use of medical marijuana:

You should always check with your doctor or pharmacist regarding potential interactions with any medication you are currently taking. 

  • Anticoagulants
  • Antiplatelets

  • Aspirin
  • Barbiturates
  • Benzodiazepines
  • Dronabinol
  • Narcotics
  • Phenobarbital
  • Sedating anticholinergics

  • Sedative hypnotics
  • SSRI
  • TCA
  • Theophylline

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Usage and Precautions

You should take precautions before using marijuana if you have:

  • Hypotension
  • Issues with blood glucose levels
  • Are on blood thinners

Do not use marijuana if you have any of the following conditions:

  • Are pregnant, may be pregnant, or are trying to conceive
  • Are breast feeding
  • COPD & Asthma (no inhalation)
  • Ischemic heart disease
  • Impaired Immune System
  • Hypertension
  • Hypersensitivity to cannabinoids


Have Questions? We’ve Got Answers.

No matter your level of comfort or knowledge with medical marijuana, we can help answer your questions. Our friendly patient care representatives are happy to talk.

Our hours are 9 a.m. - 5:30 p.m. CST.



This website contains medical cannabis information and is restricted to individuals 21 years of age or older. Please confirm your age and state:

  • IL
  • MD
  • MA
  • NY
  • OH
  • PA

Did you know that most medical marijuana information is state-specific? We have dispensaries in each of the above states, along with state-specific resources for patients. For the best experience, please select a state.