However, she also hinted at a possible future political comeback. "I will return, and we will work together for Arizona and this great country," Giffords said.
In a statement released Sunday, President Obama said: "Gabby Giffords embodies the very best of what public service should be. She's universally admired for qualities that transcend party or ideology -- a dedication to fairness, a willingness to listen to different ideas, and a tireless commitment to the work of perfecting our union."
FDA OK for Marijuana-Based Cancer Pain Drug Sought
A British company hopes to gain U.S. Food and Drug Administration approval for a marijuana-based mouth spray to treat cancer pain.
The product -- called Sativex -- contains two components of marijuana, delta9-THC and cannabidiol. The product has been approved in Canada, New Zealand and a number of European countries to relieve muscle spasms associated with multiple sclerosis, the Associated Press reported.
Sativex is currently in advanced clinical trials and maker GW Pharma hopes to get FDA approval for use of the medicine in cancer patients by the end of 2013.
Along with developing new applications for Sativex, GW Phamra is working on other drugs with different cannabis formulations, the AP reported.
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