A recent post on Walgreens' blog raised eyebrows in the medical marijuana community.

Titled "Clarifying Clinical Cannabis," the post, written by a resident pharmacist at Walgreens and the University of Illinois at Chicago, isn't an endorsement.

"The content is strictly informative, and nowhere do we take any stance on the issue. It was developed to address some of the questions we've received from patients and customers through various channels," Walgreens spokesman Jim Cohn said in an email.

Few national brands have been willing to broach the topic.

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Lauren Zumbach ~ Chicago Tribune ~