Saving Kids from Dangerous Drugs Act of 2008 - Amends the Controlled Substances Act to make it unlawful for any adult (at least 18 years of age) to knowingly and intentionally manufacture, create, distribute, or dispense, or to possess with such intent, a Schedule I or II controlled substance that is: (1) combined with a candy product; (2) marketed or packaged to appear similar to a candy product; or (3) modified by flavoring or coloring with the intent to distribute, dispense, or sell it to a person under 21 years of age. Imposes enhanced criminal penalties and a one-year minimum sentence for violations. Exempts any controlled substance that has been approved by the Secretary of Health and Human Services under the drug approval process or that has been altered at the direction of a medical practitioner for a legitimate medical purpose.