Famotidine: Side effects, dosage, uses, and more

The famotidine dosage your doctor prescribes will depend on several factors. These include:

  • the type and severity of the condition you’re using famotidine to treat
  • your age
  • the form of famotidine you take
  • other medical conditions you may have

Typically, your doctor will start you on a low dosage and adjust it over time to reach the dosage that’s right for you. They’ll ultimately prescribe the smallest dosage that provides the desired effect.

The following information describes dosages that are commonly used or recommended. However, be sure to take the dosage your doctor prescribes for you. Your doctor will determine the best dosage to suit your needs.

Forms and strengths

Generic: Famotidine

  • Form: oral tablet
  • Strengths: 20 mg, 40 mg

Brand: Pepcid

  • Form: oral tablet
  • Strengths: 20 mg, 40 mg

Dosage for duodenal ulcer

Adult dosage (ages 18 years and older)

  • Short-term dosage: 40 mg taken once per day at bedtime for up to eight weeks. Your doctor may divide your dose into 20 mg taken two times per day.
  • Long-term dosage: 20 mg taken once per day at bedtime.

Child dosage (ages 0-17 years, 40 kg or greater)

  • Short-term dosage: 40 mg taken once per day at bedtime for up to eight weeks. Your doctor may divide your dose into 20 mg taken two times per day.
  • Long-term dosage: 20 mg taken once per day at bedtime.
  • Dosage changes: Your doctor may adjust your dosage and length of treatment based on how well you respond to the drug.

Read more: 15 HONEST Pros & Cons of Living in Chicago, Illinois (The Helpful Local)

Senior dosage (ages 65 years and older)

The kidneys of older adults may not work as well as they used to. This can cause your body to process drugs more slowly. As a result, more of a drug stays in your body for a longer time. This raises your risk of side effects. Your doctor may start you on a lowered dose or a different dosing schedule. This can help keep levels of this drug from building up too much in your body.

Read more: Peripherally inserted central catheter (PICC) line – Mayo Clinic

Special considerations

People with moderate or severe kidney disease: Your doctor may decrease your dose of this drug by half or they may have you take one dose every 48 hours instead of every day.

Dosage for gastric ulcer

Adult dosage (ages 18 years and older)

  • Short-term dosage: 40 mg taken once per day at bedtime for up to eight weeks.

Child dosage (ages 0-17 years, 40 kg or greater)

  • Short-term dosage: 40 mg taken once per day at bedtime for up to eight weeks.
  • Dosage changes: Your doctor may adjust your dosage and length of treatment based on how well you respond to the drug.

Read more: 15 HONEST Pros & Cons of Living in Chicago, Illinois (The Helpful Local)

Senior dosage (ages 65 years and older)

The kidneys of older adults may not work as well as they used to. This can cause your body to process drugs more slowly. As a result, more of a drug stays in your body for a longer time. This raises your risk of side effects. Your doctor may start you on a lowered dose or a different dosing schedule. This can help keep levels of this drug from building up too much in your body.

Read more: Peripherally inserted central catheter (PICC) line – Mayo Clinic

Special considerations

People with moderate or severe kidney disease: Your doctor may decrease your dose of this drug by half. Or they may have you take one dose 48 hours instead of every day.

Dosage for gastroesophageal reflux disease

Adult dosage (ages 18 years and older)

  • Gastroesophageal reflux disease (GERD) symptoms: 20 mg taken two times per day for up to six weeks.
  • Esophagitis (irritated esophagus with sores) with GERD symptoms: 20 to 40 mg taken two times per day for up to 12 weeks.

Child dosage (ages 0-17 years, 40 kg or greater)

  • Gastroesophageal reflux disease (GERD) symptoms: 20 mg taken two times per day for up to six weeks.
  • Esophagitis (irritated esophagus with sores) with GERD symptoms: 20 to 40 mg taken two times per day for up to 12 weeks.
  • Dosage changes: Your doctor may adjust your dosage and length of treatment based on how well you respond to the drug.

Read more: 15 HONEST Pros & Cons of Living in Chicago, Illinois (The Helpful Local)

Senior dosage (ages 65 years and older)

The kidneys of older adults may not work as well as they used to. This can cause your body to process drugs more slowly. As a result, more of a drug stays in your body for a longer time. This raises your risk of side effects. Your doctor may start you on a lowered dose or a different dosing schedule. This can help keep levels of this drug from building up too much in your body.

Read more: Peripherally inserted central catheter (PICC) line – Mayo Clinic

Special considerations

Read more: BETA-HYDROXYBUTYRATE (BHB): Overview, Uses, Side Effects, Precautions, Interactions, Dosing and Reviews

People with moderate or severe kidney disease: Your doctor may decrease your dose of this drug by half. Or they may have you take one dose every 48 hours instead of every day.

Dosage for pathological hypersecretory conditions

Adult dosage (ages 18 years and older)

  • Typical starting dose: 20 mg taken every 6 hours.
  • Dose increases: Your doctor may increase your dose based on your symptoms.
  • Maximum dose: People with severe disease may need 160 mg taken every 6 hours.

Child dosage (under 0-17 years)

This drug hasn’t been studied in children under 18 years of age for the treatment of this condition.

Read more: 15 HONEST Pros & Cons of Living in Chicago, Illinois (The Helpful Local)

Senior dosage (ages 65 years and older)

The kidneys of older adults may not work as well as they used to. This can cause your body to process drugs more slowly. As a result, more of a drug stays in your body for a longer time. This raises your risk of side effects. Your doctor may start you on a lowered dose or a different dosing schedule. This can help keep levels of this drug from building up too much in your body.

Read more: Peripherally inserted central catheter (PICC) line – Mayo Clinic

Special considerations

People with moderate or severe kidney disease: Avoid using famotidine tablets for treating pathological hypersecretory conditions. The doses required for treating this condition may be higher than the maximum doses recommended in people with kidney disease.

Content Creator Zaid Butt joined Silsala-e-Azeemia in 2004 as student of spirituality. Mr. Zahid Butt is an IT professional, his expertise include “Web/Graphic Designer, GUI, Visualizer and Web Developer” PH: +92-3217244554

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