In what's believed to be the first-ever marijuana recall in Canada, a B.C. company is asking its clients to avoid using a batch of Purple Kush.

Greenleaf Medicinals of Nanaimo is voluntarily recalling Batch PK-10-20-13, which was produced for medical purposes.

“The recall is due to issues with the company’s production practices which were identified during an inspection by Health Canada and may impact the product," said a news release posted on the agency's website on Friday.

Greenleaf said it's working with other licensed producers to find a marijuana supply for the impacted clients.

Customers were being asked to stop using pot from this shipment, but anyone who already used it is not in danger.

"Producers of marijuana for medical purposes are subject to compliance and enforcement measures similar to those in place for other producers of controlled substances. They must meet strict security, control and reporting requirements, and they are regularly inspected," said Health Canada.

The federal agency oversees the medical marijuana industry in Canada, while recreational pot use remains illegal. Health Canada has come under scrutiny for how it's handled the recent transition from private medical marijuana grow-ops to a system of licensed corporate producers.

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  • 50: Snoop Lion

    <a href="http://www.esquire.com/features/what-ive-learned/snoop-dogg-0708" target="_blank">“It makes me feel the way I need to feel.”</a>

  • 49: Rick Steves

    <a href="http://www.laweekly.com/2012-04-12/art-books/rick-steves-pot-marijuana-advocate/" target="_blank">"I have used cannabis all over the world."</a>

  • 48: Oliver Stone

    <a href="http://www.rawstory.com/rs/2012/06/29/oliver-stone-marijuana-saved-me-from-becoming-a-beast-in-vietnam/" target="_blank">“I went to Vietnam, and I was there for a long time. [Using marijuana] made the difference between staying human or, as Michael Douglas said, becoming a beast.”</a>

  • 47: Rihanna

    <a href="http://www.dailymail.co.uk/tvshowbiz/article-2087637/Rihanna-smoking-weed-Hawaii-Singer-posts-cannabis-quote-Twitter.html" target="_blank">"Kush rolled, glass full... I prefer the better things!"</a>

  • 46: Hugh Hefner

    <a href="http://www.druglibrary.org/special/anderson/highinamerica8.htm" target="_blank">“Smoking helped put me in touch with the realm of the senses.”</a>

  • 45: Miley Cyrus

    <a href="http://articles.latimes.com/2011/nov/28/news/la-heb-miley-cyrus-marijuana-health-20111128" target="_blank">"You know you're a stoner when your friends make you a Bob Marley cake."</a>

  • 44: Bryan Cranston

    <a href="http://business.highbeam.com/137462/article-1G1-266750728/bryan-cranston-breaking-bad-intriguing-drug-kingpin" target="_blank">"Pot always just made me sleepy.” </a>

  • 43: Robert Downey Jr

    <a href="http://www.nbcnewyork.com/entertainment/celebrity/Downey-Jr-Dishes-to-Rolling-Stone--92440874.html" target="_blank">“Robert Downey Jr. said he started smoking weed at age 8.”</a>

  • 42: Madonna

    <a href="http://www.vulture.com/2009/10/madonna_on_letterman.html" target="_blank">"It [my behavior on the show in 1994] wasn't because I was excited about you [David Letterman]. I think it may have had something to do with the joint I smoked before I came on."</a>

  • 41: Johnny Depp

    <a href="http://www.celebstoner.com/201201199489/celebstoners/top-celebstoners/johnny-depp.html" target="_blank">"I'm not a great pothead or anything like that… but weed is much, much less dangerous than alcohol."</a>

  • 40: Phil Jackson

    In 1975 he wrote “Maverick,” a memoir about his days playing in the NBA. Among other things, Jackson spoke frankly about marijuana use. -- <a href="http://www.salon.com/2001/05/29/jackson_16/" target="_blank">Salon</a>

  • 39: Sarah Palin

    <a href="http://www.cbsnews.com/stories/2008/08/29/politics/politico/thecrypt/main4397109.shtml" target="_blank">"I can't claim a Bill Clinton and say that I never inhaled.”</a>

  • 38: Justin Bieber

    "Bieber both confirmed that he'd been caught smoking weed and apologized for it." -- <a href="http://www.huffingtonpost.com/2013/02/10/justin-bieber-apologizes-smoking-weed_n_2657314.html" target="_blank">Huffington Post</a>

  • 37: Maya Angelou

    <a href="http://www.amazon.com/Angelou-Blooms-BioCritiques-Cindy-Dyson/dp/0791061779" target="_blank">“Angelou settled into a job as a waitress and began smoking marijuana with abandon.”</a>

  • 36: Lincoln Chafee

    <a href="http://news.providencejournal.com/politics/2012/03/chafee-declines-to-state-views-on-marijuana-decriminalizationreadynens-to-h.html" target="_blank">"In 1999, then-Warwick Mayor Lincoln D. Chafee won accolades for his honesty in acknowledging he used marijuana and cocaine as a 1970s student at Brown University."</a>

  • 35: Matt Damon

    <a href="http://weedquotes.blogspot.com/2011/05/matt-damon-weed-quotes.html" target="_blank">“The first time I smoked was at home with my mother and step-father.”</a>

  • 34: Conan O'Brien

    <a href="http://www.pinkisthenewblog.com/2010-11-05/conan-obrien-talks-to-playboy-magazine" target="_blank">“I’ve tried pot, but it doesn’t do much for me.”</a>

  • 33: Susan Sarandon

    <a href="http://articles.latimes.com/1992-08-30/entertainment/ca-8213_1_susan-sarandon/2" target="_blank">"Cocaine didn't interest me. Not at all. I'm way way back in the early pot…"</a>

  • 32: Andrew Sullivan

    <a href="http://www.boston.com/bostonglobe/ideas/brainiac/2009/09/sullivan_avoids_pot_charges.html" target="_blank">"The blogger and commentator Andrew Sullivan was busted in July for possessing a small amount of marijuana within the Cape Cod National Seashore."</a>

  • 31: John Hickenlooper

    <a href="http://www.mapinc.org/drugnews/v07/n997/a08.html?1263" target="_blank">"As I've already been open about in the past -- and as I assume many would expect -- I made personal choices when I was younger that I neither support nor condone for others and certainly wouldn't encourage through public policy."</a>

  • 30: Seth MacFarlane

    <a href="http://www.starpulse.com/news/index.php/2008/07/03/seth_macfarlane_swears_off_marijuana" target="_blank">"I don't smoke much pot anymore."</a>

  • 29: Martha Stewart

    <a href="http://laist.com/2013/06/21/martha_stewart_of_course_i_know_how.php" target="_blank">"Of course I know how to roll a joint."</a>

  • 28: Angelina Jolie

    <a href="http://www.metro.co.uk/showbiz/66340-angelina-jolies-reefer-madness" target="_blank">“… the one that has the worst effect for me was pot. I felt silly and giggly - I hate feeling like that.”</a>

  • 27: Morgan Freeman

    <a href="http://www.guardian.co.uk/film/2003/apr/21/artsfeatures" target="_blank">"Never give up the ganja."</a>

  • 26: David Letterman

    <a href="http://www.cannabisculture.com/node/9795" target="_blank">“I went through one period when I smoked a surprising, a really breath-taking, amount of grass almost every night.”</a>

  • 25: Jennifer Aniston

    <a href="http://www.dailymail.co.uk/tvshowbiz/article-71729/I-enjoy-cannabis-says-Jen.html#ixzz24Cka4lW5" target="_blank">“I enjoy it once in a while. There is nothing wrong with that. Everything in moderation. I wouldn't call myself a pot-head.”</a>

  • 24: Michael Phelps

    <a href="http://www.huffingtonpost.com/nick-graham/michael-phelps-bong-pictu_b_162842.html" target="_blank">“[Phelps] firmly denies that he takes drugs, suggesting that the notorious photo of him smoking from a bong was a one-time lapse of judgment.”</a>

  • 23: Tom Brokaw

    <a href="http://www.mediabistro.com/tvnewser/brokaw-on-politics-pot_b17951" target="_blank">“…what I did was experiment with a little marijuana like a lot of other people and walked away…”</a>

  • 22: Ted Turner

    <a href="http://www.cannabisculture.com/articles/2606.html" target="_blank">"CNN anchor Gwen Scott claimed it is common knowledge that Turner sits in his office and smokes marijuana."</a>

  • 21: Brad Pitt

    <a href="http://www.dailymail.co.uk/tvshowbiz/article-2091647/Brad-Pitt-quit-smoking-marijuana-turned-doughnut.html#ixzz24BzxWK00" target="_blank">“I was hiding out from the celebrity thing, I was smoking way too much [marijuana].”</a>

  • 20: Lady Gaga

    <a href="http://content.usatoday.com/communities/entertainment/post/2011/02/lady-gaga-i-smoke-a-lot-of-pot-when-i-write-music-/1#.T143xczXEfI" target="_blank">"I smoke a lot of pot when I write music."</a>

  • 19: Michael Bloomberg

    <a href="http://www.nytimes.com/2002/04/10/nyregion/bloomberg-says-he-regrets-marijuana-remarks.html" target="_blank">"You bet I did. And I enjoyed it.''</a>

  • 18: George Clooney

    <a href="http://www.theweedblog.com/ten-celebrity-potheads-that-might-surprise-you/" target="_blank">“The owner of a local cannabis café told reporters George Clooney was no stranger there.”</a>

  • 17: Rush Limbaugh

    <a href="http://www.chronicle.su/news/rush-limbaugh-endorses-marijuana/" target="_blank">"I wouldn’t have been able to make it through hundreds of shows if it weren’t for the benefits of medical marijuana"</a>

  • 16: LeBron James

    <a href="http://sports.espn.go.com/nba/news/story?id=4350557" target="_blank">“James also revealed he and his teammates smoked marijuana one night after getting access to a hotel room in Akron.”</a>

  • 15: Sanjay Gupta

    <a href="http://www.cnn.com/2013/08/08/health/gupta-changed-mind-marijuana/index.html?hpt=hp_c4" target="_blank">"I have tried it."</a>

  • 14: Rand Paul

    <a href="http://www.gq.com/blogs/the-q/2010/08/gq-exclusive-rand-pauls-crazy-college-days-hint-theres-a-secret-society-involved.html" target="_blank">"According to this woman, who requested anonymity because of her current job as a clinical psychologist, "He and Randy came to my house, they knocked on my door, and then they blindfolded me, tied me up, and put me in their car. They took me to their apartment and tried to force me to take bong hits. They'd been smoking pot."</a>

  • 13: Andrew Cuomo

    <a href="http://www.nydailynews.com/new-york/attorney-general-andrew-cuomo-smoked-pot-younger-years-illegal-drugs-article-1.178948" target="_blank">"I did experiment with marijuana when I was a youth."</a>

  • 12: George W. Bush

    <a href="http://www.nytimes.com/2005/02/20/politics/20talk.html" target="_blank">"I wouldn't answer the marijuana questions. You know why? Because I don't want some little kid doing what I tried."</a>

  • 11: Bill Gates

    <a href="http://www.amazon.com/Gates-Microsofts-Reinvented-Industry-Himself/dp/0671880748" target="_blank">“As for drugs – well, Gates was certainly not unusual there. Marijuana was the pharmaceutical of choice…”</a>

  • 10: Bill Maher

    <a href="http://www.youtube.com/watch?feature=player_embedded&v=FLKkxPu2hfA#!" target="_blank">"Look, I have never made a secret of the fact that I have tried marijuana... About 50,000 times."</a>

  • 9: George Soros

    <a href="http://www.reuters.com/" target="_blank">"He said he had tried marijuana, enjoyed it, 'but it did not become a habit and I have not tasted it in many years.'"</a>

  • 8: John Kerry

    <a href="http://www.ontheissues.org/2004/John_Kerry_Drugs.htm" target="_blank">"Yes." [In response to the question: "Which of you are ready to admit to having used marijuana in the past?"]</a>

  • 7: Jay Z

    <a href="http://www.xxlmag.com/news/2009/09/feature-time-to-build/" target="_blank">"I smoked some weed, and that’s how I finished ‘Izzo.’"</a>

  • 6: Jon Stewart

    <a href="http://www.thedailyshow.com/watch/tue-august-5-2008/seth-rogen" target="_blank">“Do you know how many movies I wrote when I was high?”</a>

  • 5: Stephen Colbert

    <a href="http://blog.sfgate.com/tgoodman/2006/01/" target="_blank">"First, [in high school], I smoked a lot of pot...and that’s how I got to know the people ‘half in’ the society of my high school and we waved at each other over the bong. Then I got to know people by making jokes.”</a>

  • 4: Clarence Thomas

    <a href="http://www.nytimes.com/1991/07/11/us/thomas-smoked-marijuana-but-retains-bush-support.html" target="_blank">"The White House said today that Judge Clarence Thomas, President Bush's Supreme Court nominee, had smoked marijuana while in college."</a>

  • 3: Bill Clinton

    <a href="http://www.youtube.com/watch?v=cpBzQI_7ez8" target="_blank">"I experimented with marijuana a time or two."</a>

  • 2: Oprah Winfrey

    <a href="http://www.nydailynews.com/entertainment/gossip/oprah-admits-smoked-marijuana-1982-hear-better-article-1.1428915" target="_blank">"To kick things off, [television show host Andy Cohen] asked the last time Winfrey had smoked marijuana. 'Uh … 1982,' Winfrey replied. 'Let's hang out after the show,' Cohen joked. 'Okay,' Winfrey laughed. 'I hear it's gotten better.'"</a>

  • 1: Barack Obama

    <a href="http://www.youtube.com/watch?v=cpBzQI_7ez8" target="_blank">"When I was a kid, I inhaled frequently. That was the point."</a>