{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Smell+Loss",
    "query": {
      "condition": "Smell Loss"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 59,
    "total_pages": 6,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Smell+Loss&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-05-22T08:10:03.863Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT04902469",
      "title": "Cognitive and Affective Mechanisms Underlying an Olfactory Approach to Modify Cigarette Craving",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Craving"
      ],
      "interventions": [
        {
          "name": "Pleasant Odor",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Odor Blank",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pittsburgh",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "ALL",
        "summary": "18 Years to 49 Years"
      },
      "enrollment_count": 250,
      "start_date": "2021-12-01",
      "completion_date": "2026-06",
      "has_results": false,
      "last_update_posted_date": "2025-07-03",
      "last_synced_at": "2026-05-22T08:10:03.863Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04902469"
    },
    {
      "nct_id": "NCT03049358",
      "title": "Olfactory Training in Improving Sense of Smell After Radiation Therapy in Patients With Paranasal Sinus or Nasopharyngeal Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Stage 0 Nasopharyngeal Carcinoma",
        "Stage 0 Paranasal Sinus Cancer",
        "Stage I Nasopharyngeal Carcinoma",
        "Stage I Paranasal Sinus Cancer",
        "Stage II Nasopharyngeal Carcinoma",
        "Stage II Paranasal Sinus Cancer",
        "Stage IIA Nasopharyngeal Carcinoma",
        "Stage IIB Nasopharyngeal Carcinoma",
        "Stage III Nasopharyngeal Carcinoma",
        "Stage III Paranasal Sinus Cancer",
        "Stage IV Nasopharyngeal Carcinoma",
        "Stage IV Paranasal Sinus Cancer",
        "Stage IVA Nasopharyngeal Carcinoma",
        "Stage IVA Paranasal Sinus Cancer",
        "Stage IVB Nasopharyngeal Carcinoma",
        "Stage IVB Paranasal Sinus Cancer",
        "Stage IVC Nasopharyngeal Carcinoma",
        "Stage IVC Paranasal Sinus Cancer"
      ],
      "interventions": [
        {
          "name": "Physiologic Testing",
          "type": "OTHER"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        },
        {
          "name": "Sham Intervention",
          "type": "PROCEDURE"
        },
        {
          "name": "Therapeutic Procedure",
          "type": "PROCEDURE"
        },
        {
          "name": "rose essential oil",
          "type": "OTHER"
        },
        {
          "name": "lemon essential oil",
          "type": "OTHER"
        },
        {
          "name": "clove essential oil",
          "type": "OTHER"
        },
        {
          "name": "eucalyptus essential oil",
          "type": "OTHER"
        },
        {
          "name": "canola oil placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "19 Years and older"
      },
      "enrollment_count": 15,
      "start_date": "2016-12",
      "completion_date": "2018-10",
      "has_results": false,
      "last_update_posted_date": "2019-02-05",
      "last_synced_at": "2026-05-22T08:10:03.863Z",
      "location_count": 1,
      "location_summary": "Palo Alto, California",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03049358"
    },
    {
      "nct_id": "NCT03611673",
      "title": "At-Home Olfactory Training",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Olfactory Disorder"
      ],
      "interventions": [
        {
          "name": "Smell Test",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Kansas Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 70,
      "start_date": "2018-06-02",
      "completion_date": "2021-04-19",
      "has_results": false,
      "last_update_posted_date": "2023-07-20",
      "last_synced_at": "2026-05-22T08:10:03.863Z",
      "location_count": 1,
      "location_summary": "Kansas City, Kansas",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03611673"
    },
    {
      "nct_id": "NCT04406584",
      "title": "Intranasal Injection of PRP Versus Saline for Treatment of Olfactory Dysfunction",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Olfactory Disorder",
        "Olfaction Disorders",
        "Olfactory Nerve Injuries",
        "Olfactory Nerve Disorder",
        "Olfactory Nerve Diseases",
        "Covid19",
        "Post-Viral Disorder"
      ],
      "interventions": [
        {
          "name": "Injection into olfactory cleft",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2021-06-22",
      "completion_date": "2022-08-11",
      "has_results": false,
      "last_update_posted_date": "2023-03-13",
      "last_synced_at": "2026-05-22T08:10:03.863Z",
      "location_count": 2,
      "location_summary": "San Diego, California • Stanford, California",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04406584"
    },
    {
      "nct_id": "NCT04710394",
      "title": "Visual-OLfactory Training in Participants With COVID-19 Resultant Loss of Smell",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Anosmia",
        "Covid19",
        "Ageusia",
        "Hyposmia",
        "Hypogeusia",
        "SARS-CoV-2 Infection",
        "COVID-19 Pandemic"
      ],
      "interventions": [
        {
          "name": "Smell Training",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 240,
      "start_date": "2021-01-11",
      "completion_date": "2022-03-11",
      "has_results": false,
      "last_update_posted_date": "2022-06-21",
      "last_synced_at": "2026-05-22T08:10:03.863Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04710394"
    },
    {
      "nct_id": "NCT03680911",
      "title": "NAC for Head Trauma-induced Anosmia",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Anosmia",
        "Head Trauma"
      ],
      "interventions": [
        {
          "name": "N Acetyl Cysteine",
          "type": "DRUG"
        },
        {
          "name": "Placebo oral capsule",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Miami",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 7,
      "start_date": "2018-10-12",
      "completion_date": "2020-01-07",
      "has_results": true,
      "last_update_posted_date": "2021-02-04",
      "last_synced_at": "2026-05-22T08:10:03.863Z",
      "location_count": 1,
      "location_summary": "Miami, Florida",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03680911"
    },
    {
      "nct_id": "NCT05947643",
      "title": "Smell in COVID-19 and Efficacy of Nasal Theophylline (SCENT 3)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "theophylline",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 77,
      "start_date": "2022-11-22",
      "completion_date": "2025-08-04",
      "has_results": true,
      "last_update_posted_date": "2025-08-20",
      "last_synced_at": "2026-05-22T08:10:03.863Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05947643"
    },
    {
      "nct_id": "NCT00220038",
      "title": "Experiments to Test How and Why the Sense of Smell Differs Between People",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Specific Anosmias"
      ],
      "interventions": [
        {
          "name": "smell tests",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Rockefeller University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 500,
      "start_date": "2004-05",
      "completion_date": "2010-05",
      "has_results": false,
      "last_update_posted_date": "2012-01-11",
      "last_synced_at": "2026-05-22T08:10:03.863Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00220038"
    },
    {
      "nct_id": "NCT01021176",
      "title": "Evaluate a Medication on How Hunger and Appetite Are Influenced by Smell",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Food Intake"
      ],
      "interventions": [
        {
          "name": "Placebo spray",
          "type": "OTHER"
        },
        {
          "name": "Diltiazem",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "Pennington Biomedical Research Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 12,
      "start_date": "2009-10",
      "completion_date": "2009-11",
      "has_results": false,
      "last_update_posted_date": "2015-12-18",
      "last_synced_at": "2026-05-22T08:10:03.863Z",
      "location_count": 1,
      "location_summary": "Baton Rouge, Louisiana",
      "locations": [
        {
          "city": "Baton Rouge",
          "state": "Louisiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01021176"
    },
    {
      "nct_id": "NCT03990766",
      "title": "Smell Changes & Efficacy of Nasal Theophylline",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Olfactory Disorder",
        "Anosmia",
        "Viral Infection",
        "Theophylline Causing Adverse Effects in Therapeutic Use",
        "Smell Disorder"
      ],
      "interventions": [
        {
          "name": "Theophylline",
          "type": "DRUG"
        },
        {
          "name": "Saline Nasal",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 27,
      "start_date": "2019-05-15",
      "completion_date": "2021-01-15",
      "has_results": true,
      "last_update_posted_date": "2022-03-31",
      "last_synced_at": "2026-05-22T08:10:03.863Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03990766"
    }
  ]
}