TheraRadar
Data updated: May 26, 2026

SOLOSEC (secnidazole)

Priority Review Fast Track
Infectious Disease Approved 2017-09-15

SOLOSEC is indicated for the treatment of Bacterial Vaginosis; Trichomoniasis.

Source: FDA Label • EVOFEM INC • Nitroimidazole Antimicrobial

How SOLOSEC Works

Secnidazole is a 5-nitroimidazole antimicrobial. It functions as a prodrug that enters the target microorganism, where its nitro group is reduced by microbial enzymes (such as ferredoxin oxidoreductase). This reduction process creates reactive intermediates that cause DNA strand breakage and inhibit nucleic acid synthesis, leading to the death of susceptible bacteria and protozoa.

3
Indications
--
Phase 3 Trials
1
Priority Reviews
8
Years on Market

Details

Status
Prescription
First Approved
2017-09-15
Patent Cliff
2041

Pro Metrics

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Routes
ORAL
Dosage Forms
GRANULE

Companies

Active Ingredient: SECNIDAZOLE

SOLOSEC Approval History

2018
2019
2020
2021
2022
2023
2024
2025
2026
Original
New Indication
New Form
Label Update
6 FDA actions from 2017 to 2022 · 2 indication expansions
Jan 2022 SUPPL
Efficacy
Dec 2021 SUPPL
Label · Labeling
Jun 2021 SUPPL
Efficacy

What SOLOSEC Treats

2 indications

SOLOSEC is approved for 2 conditions since its original approval in 2017. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Bacterial Vaginosis
  • Trichomoniasis
Source: FDA Label

SOLOSEC Competitive Set

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Three rings of competition based on shared molecular targets and treated indications.

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Filters applied: drops same-active-ingredient (505(b)(2) reformulations), route-mismatch (topical vs systemic), and cross-therapeutic-area matches in same-indication rings.

Drugs Similar to SOLOSEC

3 of 10

FDA-approved drugs for similar conditions. Compare mechanisms and indications to understand treatment alternatives.

TINDAMAX
TINIDAZOLE
2 shared
MISSION PHARMA
Shared indications:
TrichomoniasisBacterial Vaginosis
CLEOCIN
CLINDAMYCIN PHOSPHATE
1 shared
Pfizer
Shared indications:
Bacterial Vaginosis
CLINDESSE
CLINDAMYCIN PHOSPHATE
1 shared
PADAGIS US
Shared indications:
Bacterial Vaginosis
📋

Clinical Trial Registry

2 trials
Trial Sponsor ID Phase Status Title
NCT03935217 results posted SEC-WH-301 Ph 3 completed A Phase 3 Study of Solosec® for the Treatment of Trichomoniasis
NCT03937869 SYM-1219-401 Ph 4 completed Evaluate the Safety of a Single Oral Dose of Solosec™ (Secnidazole) 2g for the Treatment of Adolescent Girls With BV
🔬

Active Pipeline

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Ongoing clinical trials by development phase

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Key Completed Trials

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Completed studies with published results, ranked by significance

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📊

Trial Timeline

Full development history with FDA approval milestones

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Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

SOLOSEC FDA Label Details

Indications & Usage

FDA Label (PDF)

SOLOSEC is indicated for the treatment of Bacterial Vaginosis; Trichomoniasis.

View full patent landscape →
11 OB patents · 2 families · 42 international docs across 6 countries

SOLOSEC Patents & Exclusivity

Latest Patent: Dec 2041
Exclusivity: Sep 2027

Patents (11 active)

US12280037 Expires Dec 11, 2041
US11684607 Expires Sep 16, 2035
US10335390 Expires Sep 4, 2035
US11000507 Expires Sep 4, 2035
US11020377 Expires Sep 4, 2035
US11000508 Expires Sep 4, 2035
US10682338 Expires Sep 4, 2035
US10849884 Expires Sep 4, 2035
US10857133 Expires Sep 4, 2035
US11602522 Expires Sep 4, 2035
US11324721 Expires Sep 4, 2035

Exclusivity

NCE Until Sep 2022
GAIN Until Sep 2027
Source: FDA Orange Book

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Revenue Insights

  • Quarterly revenue tracking
  • Historical trend analysis

Patent Timeline

  • Cliff: 2041
  • 33 active patents

Trial Analysis

  • Clinical trial tracking
  • Development stage analysis

Competitive Landscape

  • 10 similar drugs
  • Same target/indication analysis
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Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.