PHEXX (citric acid) · EVOFEM INC

Pharmacokinetic studies in humans have not been performed. Systemic exposures of lactic acid, citric acid, and potassium bitartrate following vaginal administration of PHEXX are not expected to lead to safety concerns. In vitro studies with commonly used vaginal preparations (miconazole, metronidazole, tioconazole, and a product for maintaining normal vaginal pH) showed no significant effect on the pH or buffering capacity of PHEXX.

The efficacy of PHEXX for the prevention of pregnancy was evaluated in a multi-center, open-label, single-arm clinical trial in the United States (AMP002; NCT03243305). The study enrolled females of reproductive potential 18 to 35 years of age with regular menstrual cycles (21 to 35 days). The median age was 27.8 years. The racial distribution was 70.6% White, 23.7% Black or African American, 2.5% Asian, 0.4% American Indian or Alaska Native, 0.2% Native Hawaiian or Pacific Islander, and 2.7% other. Subjects agreed to engage in at least 3 acts of heterosexual, vaginal intercourse per cycle. Su...

The following clinically significant adverse reactions are described elsewhere in the labeling: Cystitis and Pyelonephritis [see Warnings and Precautions (5.1) ] Most common adverse reactions (≥2%) were vulvovaginal burning sensation, vulvovaginal pruritus, vulvovaginal mycotic infection, urinary tract infection, vulvovaginal discomfort, bacterial vaginosis, vaginal discharge, genital discomfort, dysuria, and vulvovaginal pain. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Evofem at to...

Cystitis and Pyelonephritis: Avoid use in women with a history of recurrent UTI or urinary tract abnormalities ( 5.1 ) 5.1 Cystitis and Pyelonephritis Among 2804 subjects who received PHEXX in Studies 1 and 2, 0.36% (n=10) reported adverse reactions of cystitis, pyelonephritis, or other upper urinary tract infection (UTI). Of these, one case of pyelonephritis was considered serious and required hospitalization. Avoid use of PHEXX in females of reproductive potential with a history of recurrent u...