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warnings and cautions
5 WARNINGS AND PRECAUTIONS Vulvovaginal Candidiasis : This may develop with SOLOSEC and require treatment with an antifungal agent ( 5.1 ) Potential Risk for Carcinogenicity : Carcinogenicity has been seen in mice and rats treated chronically with nitroimidazole derivatives, which are structurally related to secnidazole. It is unclear if the positive tumor findings in lifetime rodent studies indicate a risk to patients taking a single dose of SOLOSEC to treat bacterial vaginosis. Avoid chronic use ( 5.2 ) 5.1 Vulvovaginal Candidiasis The use of SOLOSEC may result in vulvovaginal candidiasis. In controlled clinical trials of non-pregnant women with bacterial vaginosis, vulvovaginal candidiasis developed in 19/197 (9.6%) of patients who received 2 g SOLOSEC and 4/136 (2.9%) subjects who received placebo. In a controlled clinical trial of non-pregnant female patients with trichomoniasis, vulvovaginal candidiasis developed in 2/74 (2.7%) of patients who received 2 g SOLOSEC and 0/73 (0%) subjects who received placebo [see Adverse Reactions ( 6.1 )]. Symptomatic vulvovaginal candidiasis may require treatment with an antifungal agent. 5.2 Potential Risk for Carcinogenicity Carcinogenicity has been seen in mice and rats treated chronically with nitroimidazole derivatives which are structurally related to secnidazole. It is unclear if the positive tumor findings in lifetime rodent studies of these nitroimidazoles indicate a risk to patients taking a single dose of SOLOSEC to treat bacterial vaginosis. Avoid chronic use of SOLOSEC [see Nonclinical Toxicology ( 13.1 )] 5.3 Risk of Development of Drug Resistance Prescribing SOLOSEC in the absence of proven or strongly suspected bacterial infection or a prophylactic indication is unlikely to provide benefit to the patient and increases the risk of the development of drug-resistant bacteria.
6 ADVERSE REACTIONS The following important adverse reactions are discussed in greater detail in other sections of labeling: Vulvovaginal Candidiasis [Warnings and Precautions ( 5.1 )] Bacterial Vaginosis : Most common adverse reactions observed in clinical trials of bacterial vaginosis (incidence ≥ 2%) were vulvovaginal candidiasis, headache, nausea, dysgeusia, vomiting, diarrhea, abdominal pain, and vulvovaginal pruritus. ( 6.1 ). Trichomoniasis : Most common adverse reaction observed in the clinical trial of trichomoniasis (incidence ≥ 2%) was vulvovaginal candidiasis. ( 6.1 ). To report SUSPECTED ADVERSE REACTIONS, contact Lupin Pharmaceuticals, Inc. at 1-844-SOLOSEC (1-844-765-6732) or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. Bacterial Vaginosis The safety data described below reflect exposure to 629 patients, of whom 558 received a 2 g dose of SOLOSEC. SOLOSEC was evaluated in four clinical trials of female patients diagnosed with bacterial vaginosis: two placebo-controlled trials (Trial 1 n=215, Trial 2 n=189) and two uncontrolled safety trials (Trial 3 n=321, Trial 4 n=40). Most Common Adverse Reactions in Trials 1 and 2 All patients in Trial 1 and Trial 2 received a single oral dose of study medication or placebo. Trial 1 evaluated a 1 g (this dose is not approved) dose (n=71) and a 2 g dose (n=72) of SOLOSEC in patients aged 18 to 54 years. Trial 2 evaluated a 2 g dose (n=125) in patients aged 15 to 54 years. Patients in the placebo-controlled trials were primarily Black or African American (54%) or Caucasian (41%). Among 197 patients treated with a single 2 g dose of SOLOSEC in the two placebo-controlled trials, Trial 1 and 2, adverse reactions were reported by approximately 29% of patients. Table 1 displays the most common adverse reactions (≥ 2 % in SOLOSEC-treated patients) in these two trials. There were no deaths in the trials. Table 1: Adverse Reactions Occurring (≥ 2 % SOLOSEC-Treated Patients) in the Pooled Placebo-Controlled Trials 1 and 2 in Adult Women with Bacterial Vaginosis Adverse Reaction SOLOSEC N=197 n (%) Placebo N=136 n (%) Vulvovaginal candidiasis 19 (9.6) 4 (2.9) Headache 7 (3.6) 2 (1.5) Nausea 7 (3.6) 1 (0.7) Diarrhea 5 (2.5) 1 (0.7) Abdominal pain 4 (2.0) 2 (1.5) Vulvovaginal pruritus 4 (2.0) 2 (1.5) Most Common Adverse Reactions in Trial 3 Among the 321 patients in an uncontrolled trial, Trial 3, adverse reactions were reported in 30% of patients. Vulvovaginal candidiasis (8.4%), nausea (5.3%), vomiting (2.5%) and dysgeusia (3.4%) were the most common adverse reactions reported in this trial. Two SOLOSEC-treated patients in Trial 3 discontinued due to vulvovaginal candidiasis. Most Common Adverse Reactions in Trial 4 In Trial 4, the safety of SOLOSEC was evaluated in a multicenter, uncontrolled, open-label study evaluating the safety and tolerability of SOLOSEC in 40 pediatric patients between the ages of 12 and less than 18 years old all of whom were treated with a 2 g single dose of SOLOSEC. Most patients in this study were either White (60%) or Black/African-American (38%). The overall safety findings of a SOLOSEC 2 g dose in patients aged 12 to 17 years are consistent with findings in adult patients aged 18 to 65 years old. There were no deaths, severe adverse reactions, or discontinuations due to adverse reactions. Adverse reactions occurring in at least one SOLOSEC-treated pediatric patient included: nausea and abdominal pain. Trichomoniasis The safety of SOLOSEC was evaluated in 147 female patients with trichomoniasis who participated in Trial 5, a placebo controlled, double blind trial, of whom 143 (97.3%) patients completed the 'Test of Cure' (TOC) visit. In this trial, 74 patients received a single 2-gram oral dose of SOLOSEC, and 73 patients received placebo. The mean age of the patients in this study was 37.7 years, with a range of 15 to 65 years. Most of the patients were Black or African American (134/147; 91.2%). In the primary phase of Trial 5, i.e., baseline to TOC visit, one SOLOSEC-treated patient was discontinued from the study due to nausea and productive cough. Most Common Adverse Reactions A total of 11 patients (14.9%) who received SOLOSEC and 16 patients (21.9%) in the placebo group reported adverse reactions, respectively. Vulvovaginal candidiasis was reported in 2 patients (2.7%) in the SOLOSEC-treated group and in none of the patients in the placebo group. 6.2 Postmarketing Experience The following adverse reactions have been reported during use of SOLOSEC and other 2 g formulations of secnidazole outside of the United States. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Adverse Reactions with SOLOSEC Nervous System Disorders: Dysgeusia Nausea, vomiting, diarrhea, abdominal pain, dizziness, and headache have been reported when SOLOSEC was taken concomitantly with alcohol. [see Dosage and Administration ( 2.3 ), Drug Interactions ( 7.2 ) and Clinical Pharmacology ( 12.3 )]. Metronidazole, Another Nitroimidazole Agent, Structurally Related to Secnidazole Cases of severe irreversible hepatotoxicity/acute liver failure, including cases with fatal outcomes with very rapid onset after initiation of systemic use of metronidazole, another nitroimidazole agent structurally related to secnidazole, have been reported in patients with Cockayne syndrome (latency from drug start to signs of liver failure as short as 2 days) [see Contraindications ( 4 )] .