Final answer:
Dried, powdered garlic products are commonly standardized to have 1.3% alliin content. This is a typical value for such supplements, but can vary by brand or manufacturer.
Step-by-step explanation:
Dried, powdered garlic products are often standardized to contain a certain amount of alliin, which is a compound that transforms into allicin when the garlic is crushed or chopped, and it is responsible for garlic's characteristic smell and potentially some of its health benefits. The standardization levels can vary depending on the manufacturer and the product, but a common standardization for alliin content in these products is 1.3%. It is important to note that this is a typical value and actual alliin content may slightly vary between different brands and batches. Consumers should check the packaging or contact the manufacturer for the specific alliin content in a particular garlic supplement.