TheraRadar
Data updated: Jun 28, 2026

DOXYCYCLINE HYCLATE · PH HEALTH

Infectious Disease Approved 1973-07-17

To reduce the development of drug-resistant bacteria and maintain effectiveness of doxycycline and other antibacterial drugs, doxycycline should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria. When culture and susceptibility information are available, they should be considered in selecting or modifying antibacterial therapy.

NDA
Small Molecule
73
Indications
--
Phase 3 Trials
52
Years on Market

DOXYCYCLINE HYCLATE Approval History

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Original
New Indication
New Form
Label Update
1014 FDA actions from 1973 to 2026
Apr 2026 SUPPL
Label · Labeling
Mar 2026 SUPPL
Label · Labeling
Feb 2026 ORIGINAL
Update

What DOXYCYCLINE HYCLATE Treats

28 indications

DOXYCYCLINE HYCLATE is approved for 28 conditions since its original approval in 1973. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Rocky Mountain Spotted Fever
  • Typhus
  • Q Fever
  • Rickettsialpox
  • Mycoplasma pneumoniae Infection
  • Lymphogranuloma Venereum
  • Psittacosis
  • Trachoma
  • Inclusion Conjunctivitis
  • Nongonococcal Urethritis
  • Relapsing Fever
  • Chancroid
  • Plague
  • Tularemia
  • Cholera
  • Brucellosis
  • Bartonellosis
  • Granuloma Inguinale
  • Anthrax
  • Gonorrhea
  • Syphilis
  • Yaws
  • Listeriosis
  • Vincent's Infection
  • Actinomycosis
  • Clostridium Infection
  • Amebiasis
  • Malaria
Source: FDA Label

DOXYCYCLINE HYCLATE 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 DOXYCYCLINE HYCLATE

3 of 20

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

MONODOX
DOXYCYCLINE
20 shared
CHARTWELL RX
Shared indications:
Rocky Mountain Spotted FeverQ FeverRickettsialpox +17 more
DOXY 100
DOXYCYCLINE HYCLATE
18 shared
Fresenius Kabi
Shared indications:
Rocky Mountain Spotted FeverQ FeverRickettsialpox +15 more
DEMECLOCYCLINE HYDROCHLORIDE
DEMECLOCYCLINE HYDROCHLORIDE
16 shared
EPIC PHARMA LLC
Shared indications:
Rocky Mountain Spotted FeverQ FeverRickettsialpox +13 more
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Clinical Trial Registry

7 trials
Trial Sponsor ID Phase Status Title
NCT03508232 DOXY-STEMI Ph 2 completed Doxycycline to Protect Heart Muscle After Heart Attacks
NCT04504123 202001041 Ph 2 recruiting MMP-9 Inhibition for Recalcitrant Wet AMD
NCT04582383 SD-ACNE R34AR074733-01A1 Ph 4 active not recruiting Comparative Effectiveness Study of Spironolactone Versus Doxycycline for Acne
NCT03397004 HHT 160517448 Award Number W81XWH-17-1-0429 Ph 2 completed Doxycycline for Hereditary Hemorrhagic Telangiectasia
NCT05399290 results posted STUDY00003269 Ph 4 completed Subantimicrobial Doxycycline in Acne
NCT04451330 DUAL results posted RD.06.SPR.202394 Ph 4 completed A Study to Compare Efficacy and Safety of Trifarotene Cream When Used With an Oral Antibiotic for the Treatment of Severe Acne Vulgaris (AV)
NCT00635609 results posted PR-08607 Ph 4 completed Treatment of Acne Vulgaris With Doryx Tablets Compared to Doxycyline Hyclate
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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.

DOXYCYCLINE HYCLATE FDA Label Details

Indications & Usage

FDA Label (PDF)

To reduce the development of drug-resistant bacteria and maintain effectiveness of doxycycline and other antibacterial drugs, doxycycline should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria. When culture and susceptibility information are available, they should be considered in selecting or modifying antibacterial therapy. In the absence of such data, local epidemiology and susceptibility patterns may contribute to the empiric selection of therapy. Treatment: Doxycycline is indicated for the treatment of the following in...

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DOXY 100

Full clinical data, patents, trials, and competitive landscape for doxycycline hyclate.

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Data Sources

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