Many people mistakenly think that snorting (or otherwise abusing) Provigil is safe, because Provigil is a prescription medication and not a "street drug." Some people who abuse Provigil take very high doses, much higher than would be normally prescribed. Also, even people who snort or inject normal doses of Provigil are putting themselves at higher risk. Snorting or injecting drugs allows for direct entry into the bloodstream, making them more potent (and more dangerous). Also, Provigil is not sterile, and injecting or snorting it may lead to infections or other problems.
Your healthcare provider is a great place to start when searching for help for Provigil abuse or addiction, including snorting Provigil. He or she will be able to help you deal with the abuse or may suggest other resources for you.