| Class: |
Antihistamine |
| Route: |
- IV push (25mg/minute)
- IM
- IO (alternative route)
|
Adult Dose: |
25mg - 50mg - standing order |
| Pediatric Dose: |
1mg/kg - 2mg/kg - standing order |
| Drug Action: |
- Blocks histamine receptor sites in allergic reactions
- Reverses side effects of dystonic reactions caused by phenothiazines
|
| Onset: |
Maximum effects seen in 1 hour - 3 hours |
| Duration: |
6 hours - 12 hours |
| Indications: |
- Allergic reactions - standing order
- Dystonic reactions - BIOTEL AUTHORIZATION ONLY
|
| Precautions: |
Acute asthma attack |
| Side Effects: |
- Drowsiness
- Sedation
- Disturbed coordination
- Hypotension
- Palpitations
|
- Tachycardia
- Bardycardia
- Thickening of bronchial secretions
- Dry mouth and throat
- Paradoxical excitement in children
|
| Contraindications: |
Hypersensitivity to diphenhydramine |