Distributors considering an HDA membership must purchase or receive pharmaceutical and health-related products in bulk quantities, inventory these products, distribute them in individual package quantities and provide other value-added services to its suppliers and healthcare providers.

HDA Manufacturers are primarily engaged in developing, manufacturing or labeling healthcare products.

HDA service providers provide goods and services to distributors and manufacturers that are not intended for resale. These companies may include, but are not limited to, advertisers and consultants, public relations firms, media companies, brokers, hardware/software suppliers and publishers.

Health, beauty and wellness or consumer manufacturers considering HDA membership are primarily engaged in developing, manufacturing or labeling beauty care or consumer products.

HDA international distributors must operate as a full-service, healthcare-related product wholesaler in a geographical territory outside the United States and its territories.