Skip to content
My WebMD Sign In, Sign Up

Allergies Health Center

Font Size
A
A
A

Food Allergy Treatments

Medication continued...

 

 

Drug Category: Antihistamines (histamine-2 blockers)

 

Drug Name Ranitidine (Zantac)
Description H2-receptor antagonists competitively inhibit the interaction of histamine with H2 receptors. These are highly selective and have little or no effect on H1 receptors. H2-receptor antagonists are primarily used for the management of active duodenal or benign gastric ulcer disease. They are also used in the healing of duodenal or benign gastric ulcers.
Adult Dose 150 mg PO q8-12h
50 mg IV q6-8h
Pediatric Dose Safety not established
Contraindications Documented hypersensitivity
Interactions May decrease effects of ketoconazole and itraconazole; may alter serum levels of ferrous sulfate, diazepam, nondepolarizing muscle relaxants, and oxaprozin
Pregnancy B - Usually safe but benefits must outweigh the risks.
Precautions Caution in renal or liver impairment and nursing mothers; if changes in renal function occur during therapy, consider adjusting dose or discontinuing treatment

 

Drug Name Cimetidine (Tagamet)
Description H2-receptor antagonists competitively inhibit interaction of histamine with H2 receptors. These are highly selective and have little or no effect on H1 receptors. Used in hypersecretory conditions, intractable duodenal ulcers, and for prevention of upper gastrointestinal bleeding.
Adult Dose 300 mg PO q6-8h
300 mg IV q6-8h
Pediatric Dose <16 years: Not recommended
>16 years: 20-40 mg/kg/d PO/IV
Contraindications Documented hypersensitivity
Interactions Can increase blood levels of theophylline, warfarin, TCAs, triamterene, phenytoin, quinidine, propranolol, metronidazole, procainamide, and lidocaine
Pregnancy B - Usually safe but benefits must outweigh the risks.
Precautions Elderly patients may experience confusional states; may cause impotence and gynecomastia in young males; may increase levels of many drugs; adjust dose or discontinue treatment if changes in renal function occur

 

Drug Name Famotidine (Pepcid)
Description H2-receptor antagonists competitively inhibit the interaction of histamine with H2 receptors. Highly selective and have little or no effect on H1 receptors. Used for active duodenal ulcers, maintenance of healed duodenal ulcers, and active benign gastric ulcers. Also used for gastroesophageal reflux disease and associated esophagitis. Individualize and adjust dose based on response.
Adult Dose 20-40 mg PO/IV q12h
Pediatric Dose <1 years: Not recommended
1-16 years: 0.5 mg/kg/d divided doses PO/IV; not to exceed 40 mg/d
Contraindications Documented hypersensitivity
Interactions May decrease effects of ketoconazole and itraconazole
Pregnancy B - Usually safe but benefits must outweigh the risks.
Precautions Reduce dose or prolong dosing interval with severe renal insufficiency (CrCl <10 mL/min); not recommended for nursing mothers; adverse reactions include headache, dizziness, constipation, diarrhea, somnolence, seizures, palpitations, depression, and injection site reactions

 

 

Drug Category: Bronchodilators

 

Patients experiencing significant adverse respiratory symptoms as part of their food-induced allergic reaction must be managed aggressively with nebulized bronchodilators. Nebulized adrenergic agonists or bronchodilators are usually administered for treatment of bronchospasm. Supplemental oxygen can also be administered with nebulizations. In selected cases, parenteral agents may be employed to achieve sufficient bronchodilation.

1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14

WebMD Medical Reference from eMedicineHealth

Today on WebMD

epinephrine at school
Article
Woman sneezing with tissue in meadow
Slideshow
 
Woman wth tissue
Slideshow
thumbnail_florist_wearing_surgical_mask
Slideshow
 

woman sneezing
Slideshow
Bottle of allergy capsules and daisies
Article
 
Urban blossoms
Slideshow
Woman blowing nose
Slideshow
 

Woman with itchy watery eyes
Slideshow
Yawning Dog
Slideshow
 
Man sneezing into tissue
Tools
woman with duster crinkling nose
Quiz