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Viagra may hinder sense of smell

Large doses of the drug sildenafil, also known as Viagra, may weaken one’s sense of smell. German researchers at the University of Dresden Medical School conducted a study of 20 male subjects. The subjects were given either 50-mg or 100-mg Viagra doses or placebos and then exposed to different odors.

Researchers measured the subjects’ odor detection threshold, odor differentiation and odor identification abilities. Researchers found that individuals who had taken the 100-mg dose had a more difficult time detecting and differentiating odors compared to individuals who had taken placebos. On the other hand, individuals who had taken the 50-mg dose experienced no significant change in their sense of smell.

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