Open-Label Study to Evaluate Safety of A Single Dose of SYM-1219

Approximately 325 patients will be enrolled. Patients determined to be eligible for the study will receive SYM-1219 granules containing 2 grams of secnidazole orally as a single dose. Patients determined to be eligible at the Baseline visit will receive a single dose of SYM-1219 granules containing 2 grams of secnidazole in 4 ounces of unsweetened applesauce to be self-administered on Day 1. Patients will be contacted by telephone once between Days 8 to 10 to inquire about possible adverse events. A final study visit will occur on Day 21 to 30 to assess the patient for safety.