Hello, Anon. Thank you for writing today.
According to drugs.com - Amphora has not (yet) been FDA approved.
Amphora (L-lactic acid, citric acid, and potassium bitartrate) is a non-hormonal vaginal gel in development for use as a contraceptive, and for the prevention of urogenital chlamydia in women.
More information on the last update: https://www.drugs.com/history/amphora.html