Patch With Small Blue Square

Blue squared drug patches

Trying to find out what type of patch is being used on the lower part of back that leaves a blue squared stain on clothing right above crack. being bought off the streets ## Hi Sasha, The only patch I know of is the Fentanyl patch; which is commonly used in pre-procedures as a pain reliever as well as an anesthetic in combination with a benzodiazepine. I tried finding some images of the patch on Google but I didn't have much luck. Does this medication sound familiar to you? You can learn more about this drug on the page for Fentanyl Details

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