Dermatophagoides farinae



Dermatophagoides farinae is an extract from Dermatophagoides farinae used in allergy testing.

Brand Names
Acarizax, Odactra
Generic Name
Dermatophagoides farinae
DrugBank Accession Number

Dermatophagoides farinae extracts are sterile solutions used for intradermal testing or subcutaneous immunotherapy. This combination is approved for as a year-round, once-a-day tablet that's dissolved under the tongue as a treatment for dust mite allergies.

Biologic Classification
Allergen Extract
  • American house dust mite
  • American house dust mite extract
  • House dust mite extract, dermatophagoides farinae
  • Insects (whole body), mite dermatophagoides farinae
  • Mite D.F.
  • Mite D.F. (dermatophagoides farinae) standardized



Dermatophagoides farinae is indicated as immunotherapy for house dust mite (HDM)-induced allergic rhinitis, with or without conjunctivitis, confirmed by in vitro testing for IgE antibodies to Dermatophagoides farinae or Dermatophagoides pteronyssinus house dust mites, or skin testing to licensed house dust mite allergen extracts. It is approved for use in patients 12 through 65 years of age.5

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Associated Conditions
Indication TypeIndicationCombined Product DetailsApproval LevelAge GroupPatient CharacteristicsDose Form
Used in combination to manageAllergic rhinitis due to house dust miteCombination Product in combination with: Dermatophagoides pteronyssinus (DB10401)••••••••••••••••• •••• •••• •••••••• ••••••••••••••••••••
Used in combination to manageAllergic rhinitis due to house dust miteCombination Product in combination with: Dermatophagoides pteronyssinus (DB10401)••••••••••••••••• •••• •••• •••••••••••••
Contraindications & Blackbox Warnings
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Treatment with ACTAIR has been shown to induce a systemic antibody response towards house dust mite allergens, with an increase in specific IgG4 antibodies in some patients. These immunoglobulins may compete with IgE for allergen binding, thereby decreasing allergen capture and presentation.

Mechanism of action

The complete mechanisms of allergen immunotherapy are not clear and remain the subject of investigation. The allergic reaction is dependent on the presence of allergen-specific immunoglobulin E (IgE) antibodies that are bound to specific receptors on mast cells and basophils. The presence of IgE antibodies sensitizes these cells, and upon interaction with the appropriate allergens, histamine and other mediators are released which produce local or systemic responses in sensitive individuals, and characteristic symptoms of atopic diseases, such as allergic rhinitis and allergic asthma. Changes in serum antibody and T-lymphocyte responses resulting from immunotherapy have been demonstrated, and these changes often correlate closely with clinical (symptom) improvements. Specific mechanisms may vary depending on the nature of the allergic disease, the allergenic specificities of patients and populations, extract formulations, route of administration, dose and duration of treatment. Subcutaneous administration of allergenic extracts is known to elicit numerous immunological changes that are both time and dose-dependent. Many of these changes appear to be related to (or a precursor to) improvements in symptoms and other clinical parameters, as noted above. Specific changes found after immunotherapy with dust mite extracts include significant increases in mite-specific IgG4 antibodies, interleukin-10-positive T cells, and several T-cell receptors, and significant decreases in serum nitric oxide, eosinophil catonic protein, interleukin-4-positive T cells and IgE-mediated basophil histamine release.


Allergens in ACTAIR consist mainly of proteins and glycoproteins. There is no direct bioavailability of intact allergens in the blood. Therefore, no pharmacokinetic studies in animals or in humans have been carried out to investigate the pharmacokinetic profile and metabolism of ACTAIR.

Volume of distribution

Not Available

Protein binding

Not Available

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Route of elimination

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Adverse Effects
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Not Available

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Pharmacogenomic Effects/ADRs
Not Available


Drug Interactions
This information should not be interpreted without the help of a healthcare provider. If you believe you are experiencing an interaction, contact a healthcare provider immediately. The absence of an interaction does not necessarily mean no interactions exist.
Not Available
Food Interactions
No interactions found.


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Brand Name Prescription Products
NameDosageStrengthRouteLabellerMarketing StartMarketing EndRegionImage
Allergenic Extract - Standardized Mite Dermatophagoides FarinaeLiquid10000 unit / mLIntradermal; SubcutaneousGreer Laboratories1999-03-15Not applicableCanada flag
Allergenic Extract - Standardized Mite Dermatophagoides FarinaeLiquid5000 unit / mLIntradermal; SubcutaneousGreer LaboratoriesNot applicableNot applicableCanada flag
Allergenic Extract Standardized Mite DFLiquid30000 unit / mLSubcutaneousHollister Stier, Unit Pharm, Division Of Miles Canada Inc.1992-12-311998-09-25Canada flag
Allergenic Extract Standardized Mite DFLiquid10000 unit / mLSubcutaneousHollister Stier, Unit Pharm, Division Of Miles Canada Inc.1992-12-311998-09-25Canada flag
Allergenic Extract Standardized Mite Df (10,000 Au/ml)Solution10000 unit / mLPercutaneous; SubcutaneousJubilant Hollisterstier Llc1998-01-16Not applicableCanada flag
Mixture Products
NameIngredientsDosageRouteLabellerMarketing StartMarketing EndRegionImage
AcarizaxDermatophagoides farinae (6 unit) + Dermatophagoides pteronyssinus (6 unit)TabletSublingualAlk Abelló A/S2017-11-06Not applicableCanada flag
ACARIZAXDermatophagoides farinae (6 AU) + Dermatophagoides pteronyssinus (6 AU)PowderOralบริษัท แอ๊บบอต ลาบอแรตอรีส จำกัด2018-03-28Not applicableThailand flag
ACARIZAX 12 SQ-HDM Lyophilisat zur sublingualen AnwendungDermatophagoides farinae (12 SQ-HDM) + Dermatophagoides pteronyssinus (12 SQ-HDM)PowderOralAlk Abelló A/S2015-11-26Not applicableAustria flag
Allergen Pack Dermatophagoides FarinaeDermatophagoides farinae (15000 [AU]/1mL) + Sodium chloride (0.9 g/1mL)KitIntradermal; SubcutaneousAlvix Laboratories2015-07-212018-03-08US flag
Allergenic Extract - Standardized Mite MixDermatophagoides farinae (5000 unit / mL) + Dermatophagoides pteronyssinus (5000 unit / mL)LiquidIntradermal; SubcutaneousGreer Laboratories2002-08-20Not applicableCanada flag


ATC Codes
V01AA03 — House dust mites
Drug Categories
Not classified
Affected organisms
  • Humans and other mammals

Chemical Identifiers

CAS number
Not Available


General References
  1. Liu L, Guo D, Liang Q, Ding S, Wu B, Zhang L, Li Q: The efficacy of sublingual immunotherapy with Dermatophagoides farinae vaccine in a murine atopic dermatitis model. Clin Exp Allergy. 2015 Apr;45(4):815-22. doi: 10.1111/cea.12417. [Article]
  2. Eremina OIu, Stepanova GN: [The mechanism of action of permethrin on house dust mites]. Izv Akad Nauk Ser Biol. 1995 Jan-Feb;(1):72-9. [Article]
  3. Mauro M, Boni E, Makri E, Incorvaia C: Pharmacodynamic and pharmacokinetic evaluation of house dust mite sublingually administered immunotherapy tablet in the treatment of asthma. Expert Opin Drug Metab Toxicol. 2015;11(12):1937-43. doi: 10.1517/17425255.2015.1113255. Epub 2015 Nov 13. [Article]
  4. Drug information [Link]
  5. FDA Approved Drug Products: ODACTRA House Dust Mite (Dermatophagoides farinae and Dermatophagoides pteronyssinus) Allergen Extract Tablet for Sublingual Use [Link]
PubChem Substance

Clinical Trials

Clinical Trials


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Dosage Forms
Tablet, orally disintegratingOral
Injection, solutionSubcutaneous
Tablet, orally disintegratingOral12 U
KitIntradermal; Subcutaneous
LiquidIntradermal; Subcutaneous5000 unit / mL
SolutionPercutaneous; Subcutaneous
LiquidSubcutaneous10000 unit / mL
LiquidSubcutaneous30000 unit / mL
SolutionPercutaneous; Subcutaneous10000 unit / mL
SolutionPercutaneous; Subcutaneous30000 unit / mL
Injection, solution10000 AU/1ml
LiquidIntradermal; Percutaneous; Subcutaneous10000 unit / mL
LiquidIntradermal; Percutaneous; Subcutaneous
LiquidIntradermal; Subcutaneous30000 unit / mL
Injection, suspensionSubcutaneous
InjectionCutaneous; Intradermal; Subcutaneous10000 [AU]/1mL
Injection, solutionPercutaneous; Subcutaneous10000 [AU]/1mL
Injection, solutionSubcutaneous5000 [AU]/1mL
SolutionPercutaneous10000 [AU]/1mL
ConcentrateIntradermal; Percutaneous; Subcutaneous10000 [AU]/1mL
ConcentrateIntradermal; Percutaneous; Subcutaneous30000 [AU]/1mL
ConcentrateIntradermal; Percutaneous; Subcutaneous5000 [AU]/1mL
Injection, solutionIntradermal; Subcutaneous10000 [AU]/1mL
ConcentrateIntradermal; Percutaneous; Subcutaneous
Injection, solutionSubcutaneous
LiquidIntradermal; Subcutaneous10000 unit / mL
Injection, solutionIntradermal; Subcutaneous3000 [AU]/1mL
Injection, solutionIntradermal; Subcutaneous5000 [AU]/1mL
Injection, solutionSubcutaneous10000 [AU]/1mL
Injection, solutionIntradermal30 [AU]/1mL
Injection, solutionIntradermal300 [AU]/1mL
Injection, solutionPercutaneous; Subcutaneous30000 [AU]/1mL
LiquidIntradermal; Subcutaneous
Injection, solutionPercutaneous
Injection, solutionIntradermal; Subcutaneous
Solution10000 AU/1ml
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Experimental Properties
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Drug created at December 01, 2015 20:03 / Updated at February 22, 2024 22:28