Pharm
Bismuth Subsalicylate
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Bismuth Subsalicylate
, Pepto-Bismol
Indications
Traveler's Diarrhea
Helicobacter Pylori Treatment
Contraindications
Bismuth Subsalicylate
Salicylate
allergy
Concurrent use with other
Salicylate
s OR
Warfarin
(relative contraindication)
Children and teens (relative contraindication)
Due to
Reye's Syndrome
risk
Avoid especially with febrile illness,
Varicella Zoster Virus
or
Influenza
Do not exceed 3 weeks of use (or 2 days of use for
Acute Diarrhea
)
Mechanism
Bismuth salt of salicylic acid with minimal gastrointestinal absorption
Protects gastric mucosa from local acid and pepsin corrosive effects
Antimicrobial activity
Preparations
Bismuth Subsalicylate (Original Pepto-Bismol)
Chewable Tablets 262 mg
Suspension 262 mg/15 ml
Caplets 262 mg
Calcium Carbonate
Children's Pepto-Bismol
Dosing
Acute Diarrhea
Tablet: Two tabs orally four times daily up to maximum of every 4 hours
Adult
Take 2 tablets or 30 ml every 30 to 60 minutes as needed
Maximum of 8 doses/day (240 ml/day) and up to 2 days
Child
Give 100 mg/kg/day divided in 5 doses for up to 2 days
Age 3 to 6 years old
Give 1/3 of a 262 mg chewable tablet every 30 to 60 min up to 8 doses/day OR
Give 5 ml of 262 mg/15 ml suspension every 30 to 60 min up to 8 doses/day
Age 7 to 9 years old
Give 2/3 of a 262 mg chewable tablet every 30 to 60 min up to 8 doses/day OR
Give10 ml of 262 mg/15 ml suspension every 30 to 60 min up to 8 doses/day
Age 10 to 12 years old
Give 1 of a 262 mg chewable tablet every 30 to 60 min up to 8 doses/day OR
Give 15 ml of 262 mg/15 ml suspension every 30 to 60 min up to 8 doses/day
Dosing
Chronic Infant
Diarrhea
Age 2 to 24 months (up to age 2): Give 2.5 ml of 262 mg/15 ml suspension orally every 4 hours as needed
Age 25 to 48 months (up to age 4): Give 5 ml of 262 mg/15 ml suspension orally every 4 hours as needed
Age 49 to 70 months (>age 4 years): Give 10 ml of 262 mg/15 ml suspension orally every 4 hours as needed
Dosing
Traveler's Diarrhea Prevention
Adult
Take 2 tabs four times daily before meals and at bedtime (2.1 grams/day)
Safety
Pregnancy Category C
Avoid in
Lactation
Adverse Effects
See
Salicylate
s
Turns
Tongue
and stool black
Mild
Tinnitus
Drug Interactions
May potentiate other medications
Oral
Anticoagulant
s
Hypoglycemic agents
Decreases effect of other drugs
Uricosuric
s (
Probenecid
, Sulfinpryazone)
Tetracyclines
May decrease
Bioavailability
of
Doxycycline
,
Tetracycline
Doxycycline
is used for
Malaria Prophylaxis
Resources
Bismuth Subsalicylate Tablet (DailyMed)
https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=015ca07a-f6b5-4741-a7b0-821cf6d4e418
Bismuth Subsalicylate Chewable (DailyMed)
https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=cdfcfdc2-ed5e-49d8-b16f-e32748d82e3e
References
Hamilton (2020) Tarascon Pocket Pharmacopoeia
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