Is it safe to use marijuana/cannabis before or after getting a COVID-19 vaccine? Does it matter if it is edibles, smoked etc? Does it affect effectiveness?

Question: 

Is it safe to use marijuana/cannabis before or after getting a COVID-19 vaccine? Does it matter if it is edibles, smoked etc? Does it affect effectiveness?

Answer: 
If you use cannabis, the COVID-19 vaccine is safe for you. 
 
When it’s time for your appointment though, we recommend that you are not high. This is not because of a vaccine safety concern (that marijuana interferes with the vaccine) but because the healthcare provider needs your informed consent before giving vaccines. Marijuana may impair (lessen) your ability to fully understand the health information and ask questions.
 
Many adults feel a bit nervous about immunization appointments. Here are some things you can do before, during, and after the immunization appointment that can help make immunizations easier and less stressful.
 
ImmunizeBC does not have specific recommendations around cannabis use after getting any vaccine, including the COVID-19 vaccines. 
 
There are no studies around cannabis use and the effectiveness of the COVID-19 vaccines. There is emerging evidence suggesting that cannabis smoking can have negative consequences on a person's respiratory system and immune competence so it is even more important to get a COVID-19 vaccine to protect yourself from the virus if you smoke.
 
Date last reviewed: 
Monday, Aug 02, 2021