# Over-the-Counter Antihistamines & Heat Stress

> **NCT06217367** · PHASE4 · UNKNOWN · sponsor: **Lakehead University** · enrollment: 16 (estimated)

## Conditions studied

- Heat Illness
- Allergic Rhinitis
- Heat Injury
- Sudomotor Sympathetic Dysfunction

## Interventions

- **DRUG:** 50 mg Diphenhydramine
- **DRUG:** 10 mg Loratadine
- **DRUG:** 5 mg Desloratadine
- **OTHER:** Placebo (Sugar Pill)

## Key facts

- **NCT ID:** NCT06217367
- **Lead sponsor:** Lakehead University
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2023-12-05
- **Primary completion:** 2024-06
- **Final completion:** 2024-06
- **Target enrollment:** 16 (ESTIMATED)
- **Last updated:** 2024-01-22


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT06217367

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT06217367, "Over-the-Counter Antihistamines & Heat Stress". Retrieved via AI Analytics 2026-06-22 from https://api.ai-analytics.org/clinical/NCT06217367. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*