Pepcid ac and Viagra drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Pepcid ac (famotidine) and Viagra (sildenafil citrate). Common drug interactions include chronic kidney disease among males.

The phase IV clinical study analyzes what interactions people have when they take Pepcid ac and Viagra. It is created by eHealthMe based on reports of 86 people who take the same drugs from the FDA, and is updated regularly.

What is Pepcid ac?

Pepcid ac has active ingredients of famotidine. It is often used in gastroesophageal reflux disease. eHealthMe is studying from 9,573 Pepcid ac users. Check the latest studies of Pepcid ac.

What is Viagra?

Viagra has active ingredients of sildenafil citrate. It is often used in erection problems. eHealthMe is studying from 63,865 Viagra users. Check the latest studies of Viagra.

On Jul, 07, 2026

86 people who take Pepcid ac and Viagra together, and have interactions are studied.

What are the common drug interactions of Pepcid Ac and Viagra, by gender? *:

female:

n/a

male:

Chronic kidney disease
Renal failure (kidney dysfunction)
Fall
Loss of consciousness
Middle insomnia (difficulty returning to sleep after awakening either in the middle of the night)
Pain
Dizziness
Erythema (redness of the skin)
Headache (pain in head)
Hyperparathyroidism secondary (an abnormally high concentration of parathyroid hormone in the blood, resulting in weakening of the bones through loss of calcium-secondary)

What are the common drug interactions of Pepcid Ac and Viagra, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

Chronic kidney disease
Renal failure (kidney dysfunction)
Renal injury (kidney injury)
Depression
Anxiety
Staphylococcal sepsis (blood infection by an infection with staphylococcus bacteria)
Suicidal ideation
Tubulointerstitial nephritis (a form of nephritis affecting the interstitium of the kidneys surrounding the tubules)

40-49:

Chronic kidney disease
Renal failure (kidney dysfunction)
Renal cancer (cancer of kidney)
Nephrogenic anaemia (anaemia due to kidney disease)
Renal injury (kidney injury)
Tubulointerstitial nephritis (a form of nephritis affecting the interstitium of the kidneys surrounding the tubules)
Anaemia (lack of blood)
Culture urine positive
Dehydration (dryness resulting from the removal of water)
Depression

50-59:

Chronic kidney disease
Renal failure (kidney dysfunction)
Renal impairment (severely reduced kidney function)
Tubulointerstitial nephritis (a form of nephritis affecting the interstitium of the kidneys surrounding the tubules)
Renal injury (kidney injury)
Nephrogenic anaemia (anaemia due to kidney disease)
Renal tubular necrosis (death of kidney tubules)
Anhedonia (inability to experience pleasure from activities usually found enjoyable)
Anxiety
Depression

60+:

Chronic kidney disease
Dizziness
Dyskinesia (abnormality or impairment of voluntary movement)
Fatigue (feeling of tiredness)
Oral discomfort (pain or irritation in mouth)
Paraesthesia (sensation of tingling, tickling, prickling, pricking, or burning of a person's skin with no apparent long-term physical effect)
Therapeutic response decreased (less preventive response)
Back pain
Balance disorder
Blood pressure decreased

What are the existing conditions these people have? *

High Blood Pressure: 34 people, 39.53%
Pain: 25 people, 29.07%
High Blood Cholesterol: 19 people, 22.09%
Infection: 18 people, 20.93%
Indigestion: 18 people, 20.93%
Diabetes: 14 people, 16.28%
Depression: 10 people, 11.63%
Headache (pain in head): 9 people, 10.47%
Inflammation: 9 people, 10.47%
Fluid Retention (an abnormal accumulation of fluid in the blood): 9 people, 10.47%

* Approximation only. Some reports may have incomplete information.

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