evidence: The HPV vaccine contains polysorbate 80 as a stabilizer. The J&J/Janssen COVID-19 vaccine, no longer available in the U.S., also contains this stabilizer. Some stories on the internet have suggested that polysorbate 80 in vaccines causes infertility. First, it is important to know that these vaccines (HPV and COVID-19) do not cause infertility. Second, polysorbate 80 has been used for many years as an emulsifier to make ice cream smooth and to slow melting. A typical serving of ice cream (1/2 cup) may contain about 170,000 micrograms* of polysorbate 80. On the other hand, the amount of polysorbate 80 in each dose of these vaccines — 50 micrograms* (HPV) and 160 micrograms* (COVID-19) — is very small. Therefore, polysorbate 80 isn’t contained in vaccines at quantities that could possibly do harm.