People who buy some cold medicines will have to prove they are at least 18 when a new law takes effect in December.
Governor Jennifer Granholm signed a law today requiring customers to show photo ID before buying some cold and flu medicines.
The law is aimed at restricting the sales of pseudoephedrine or ephedrine, the key ingredient to make methamphetamine, an illegal drug.
Anyone under 18 will be prohibited from buying products with pseudoephedrine or ephedrine as the sole active ingredient.
The law will limit adult customers to buying two packages, or a maximum 48 tablets or capsules.
Stores that don't keep the drugs behind the counter or in a locked case will have to keep a log of every purchase.