The criminal offense of bringing into, or removing from, a country those items that are prohibited or upon which customs or excise duties have not been paid. Smuggling is the secret movement of goods across national borders to avoid Customs Duties or import or export restrictions.
Definition of dietary supplement. : a product taken orally that contains one or more ingredients (as vitamins or amino acids) that are intended to supplement one's diet and are not considered food.
Herbs, vitamins, and other dietary supplements may augment or antagonize the actions of prescription and nonprescription drugs. St. John's wort is the supplement that has the most documented interactions with drugs.