Sale of certain weight loss and muscle building products to minors prohibited. Prohibits any person from selling or distributing an over-the-counter diet pill or dietary supplement for weight loss or muscle building to a person who is younger than 18 years of age and requires that the purchaser demonstrate, by producing a driver's license or similar photo identification issued by a government agency, that he is at least 18 years of age. For mail or Internet sales, the bill requires that the person offering an over-the-counter diet pill or dietary supplement for weight loss or muscle building (i) prior to the sale verifies that the purchaser is at least 18 years of age through a commercially available database that is regularly used by businesses or governmental entities for the purpose of age and identity verification and (ii) uses a method of mailing, shipping, or delivery that requires the signature of a person at least 18 years of age before the products will be released to the purchaser. The bill also requires that over-the-counter diet pills or dietary supplements for weight loss or muscle building will only be displayed for sale behind a store counter that is not accessible to consumers or in a locked case that requires assistance from a store employee for customer access. A violation of the bill's provisions is punishable by a civil penalty in the amount of $500 for a first violation and $2,500 for a second or subsequent violation within a three-year period.