The pH-D Feminine Health Support® [or pH-D®] brand of personal hygiene products and other families of products offered under different brand names are part of an intellectual property portfolio owned by Vireo Systems, Inc. that includes patents, pending patent applications, and trademarks in the U.S. and elsewhere.

Vireo Systems, Inc. manufactures pH-D Feminine Health Support and other health-related products in a SQF certified facility, which incorporates HACCP and GMP.

Vireo’s manufacturing plants are located just outside of Nashville, Tennessee and Omaha, Nebraska. Vireo was founded in 2002 as a part of on-going research with several university-based scientists.

Vir·e·o (vîr´ē-ō) n., 1. A classical latin synonym for health. Derived from vivere (to be verdant; vibrant; vigorous; full of life; fresh; youthful vigor or health). 2. Any of several small greenish New World songbirds.