TheraRadar
Data updated: May 26, 2026

DHIVY (carbidopa)

DOPA Decarboxylase Inhibitors
CNS Approved 2021-11-12

DHIVY is indicated for the treatment of Parkinson's Disease; Post-Encephalitic Parkinsonism; Parkinsonism.

Source: FDA Label • AVION PHARMS • Aromatic Amino Acid Decarboxylation Inhibitor

How DHIVY Works

Levodopa is the metabolic precursor of dopamine; it crosses the blood-brain barrier and is decarboxylated to dopamine in the brain. Carbidopa is a peripheral aromatic

1
Indication
--
Phase 3 Trials
4
Years on Market

Details

Status
Prescription
First Approved
2021-11-12
Patent Cliff
2039

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Routes
ORAL
Dosage Forms
TABLET

Companies

Active Ingredient: CARBIDOPA , LEVODOPA

DHIVY Approval History

2022
2023
2024
2025
2026
Original
New Indication
New Form
Label Update
4 FDA actions from 2021 to 2026
Mar 2026 SUPPL
Label · Labeling
Jul 2022 SUPPL
Label · Labeling
Jun 2022 SUPPL
Label · Labeling

What DHIVY Treats

3 indications

DHIVY is approved for 3 conditions since its original approval in 2021. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Parkinson's Disease
  • Post-Encephalitic Parkinsonism
  • Parkinsonism
Source: FDA Label

DHIVY Competitive Set

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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 DHIVY

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CREXONT
CARBIDOPA
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IMPAX
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RYTARY
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IMPAX
Shared indications:
Parkinson's DiseasePost-Encephalitic ParkinsonismParkinsonism
SINEMET
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Merck
Shared indications:
Parkinson's DiseasePost-Encephalitic ParkinsonismParkinsonism
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Clinical Trial Registry

17 trials
Trial Sponsor ID Phase Status Title
NCT04520178 5-HTP only Pro00119483/00125176 Ph 2, Ph 3 recruiting Effects of 5HTP on the Injured Human Spinal Cord
NCT04325503 RES results posted HUM00156490 5U01AG061393-05 Ph 1, Ph 2 completed Neurobiological Drivers of Mobility Resilience: The Dopaminergic System
NCT01323374 FMS201 Droxidopa FMS201 Ph 2 completed Study To Assess The Clinical Benefit Of Droxidopa And Droxidopa/Carbidopa In Subjects With Fibromyalgia
NCT04000919 18.1268 Ph 2, Ph 3 suspended Effects of 5HTP and LDOPA on CNS Excitability After SCI
NCT00685919 results posted 101499 HL071784-05A1 Ph 2, Ph 3 completed Peripheral Dopamine in Postural Tachycardia Syndrome
NCT03055936 COMDOS1 results posted 3112005 Ph 1 completed Dose-finding Pharmacokinetic Study in Healthy Males
NCT03266965 20161186 W81XWH-16-1-0462 Ph 1 completed Histaminergic Basis of Central Fatigue in Multiple Sclerosis - A Novel Approach
NCT03115827 results posted VUMC54580 Ph 4 completed Norepinephrine-targeted Therapy for Action Control in Parkinson Disease
NCT01399905 results posted IRB00004133 Ph 2 completed High and Low Dose Carbidopa Treatment of Parkinson's Disease
NCT00845000 results posted P05550 MK-3814-023 Ph 1 completed Acute Effects of Preladenant (SCH 420814) on Dyskinesia and Parkinsonism in Levodopa Treated Participants (P05550)
NCT02633839 CVT-301-007 Ph 1 completed A Study of the Safety and Levodopa Pharmacokinetics Following Single Dose Administration of CVT 301 (Levodopa Inhalation Powder) in Smoking and Non-Smoking Adults
NCT02633007 CVT-301-008 Ph 1 completed A Study of the Safety and Pharmacokinetics of Levodopa Following Administration of CVT 301 (Levodopa Inhalation Powder) in Adults With Asthma
NCT01212484 results posted 09-0011 Ph 3 completed Carbidopa for the Treatment of Nausea and Vomiting in Familial Dysautonomia
NCT01227655 BIPARKII results posted BIA-91067-302 2010-022366-27, BIA-91067-302 Ph 3 completed Efficacy and Safety of BIA 9-1067 in Idiopathic Parkinson's Disease Patients.
NCT01568073 results posted BIA-91067-301 2010-021860-13 Ph 3 completed Efficacy and Safety of BIA 9-1067 in Idiopathic Parkinson's Disease Patients With "Wearing-off" Phenomenon
NCT01229332 ND0611/002 Ph 1, Ph 2 completed A Safety, Tolerability and Pharmacokinetic Study of ND0611 on the Top of Different Oral Dosage Forms of Levodopa/Carbidopa in Parkinson's Disease Patients
NCT01296464 PARTEST 2939136 Ph 2 completed Comparing Different Levodopa/Carbidopa/Entacapone Treatment Regimens
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Active Pipeline

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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.

DHIVY FDA Label Details

Indications & Usage

FDA Label (PDF)

DHIVY is indicated for the treatment of Parkinson's Disease; Post-Encephalitic Parkinsonism; Parkinsonism.

View full patent landscape →
3 OB patents · 1 families · 14 international docs across 7 countries

DHIVY Patents & Exclusivity

Latest Patent: Mar 2039

Patents (3 active)

US11819485 Expires Mar 28, 2039
US11439613 Expires Mar 28, 2039
US11033521 Expires Mar 28, 2039
Source: FDA Orange Book

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Revenue Insights

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  • Historical trend analysis

Patent Timeline

  • Cliff: 2039
  • 5 active patents

Trial Analysis

  • Clinical trial tracking
  • Development stage analysis

Competitive Landscape

  • 20 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.