Flagyl and Famvir drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Flagyl (metronidazole) and Famvir (famciclovir). Common drug interactions include swelling among females and hypotension among males.

The phase IV clinical study analyzes what interactions people have when they take Flagyl and Famvir. It is created by eHealthMe based on reports of 61 people who take the same drugs from the FDA, and is updated regularly.

What is Flagyl?

Flagyl has active ingredients of metronidazole. It is often used in vaginitis bacterial. eHealthMe is studying from 25,897 Flagyl users. Check the latest studies of Flagyl.

What is Famvir?

Famvir has active ingredients of famciclovir. It is often used in herpes labialis (oral herpes simplex). eHealthMe is studying from 3,061 Famvir users. Check the latest studies of Famvir.

On Jul, 25, 2026

61 people who take Flagyl and Famvir together, and have interactions are studied.

What are the common drug interactions of Flagyl and Famvir, by gender? *:

female:

Swelling
Tricuspid valve incompetence (inefficient heart valve)
Osteopenia (a condition where bone mineral density is lower than normal)
Exostosis (formation of new bone on the surface of a bone)
Osteonecrosis of jaw (death of bone of jaw)
Osteoporosis (bones weak and more likely to break)
Anaemia (lack of blood)
Dysphagia (a condition in which swallowing is difficult or painful)
Fatigue (feeling of tiredness)
Humerus fracture (injury to the upper arm bone)

male:

Hypotension (abnormally low blood pressure)
Hypoxia (low oxygen in tissues)
Renal failure acute (rapid kidney dysfunction)
Cerebral ischaemia (insufficient blood flow to the brain to meet metabolic demand)
Cholecystitis acute (rapid infection of gallbladder)
Febrile neutropenia (fever with reduced white blood cells)
Respiratory distress (difficulty in breathing)
Enterococcal bacteraemia (presence of bacteria lactic acid in the blood)
Abdominal hernia
Abdominal pain

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

Coagulopathy (blood's ability to clot is impaired)
Hepatocellular injury (liver injury)
Rash
Rhabdomyolysis (a condition in which damaged skeletal muscle tissue breaks down)
Serotonin syndrome (occurs when two drugs that affect the body's level of serotonin are taken together at the same time)
Myalgia (muscle pain)
Cytarabine syndrome (due to high dose of cytarbine consists of fever, muscle ache, bone pain, occasional chest pain, rash)
Aphasia (damage to the parts of the brain that control language)
Apraxia (disorder that affects a person's ability to organize the movements of the muscles used in speech)
Blood creatine phosphokinase increased

40-49:

n/a

50-59:

Osteopenia (a condition where bone mineral density is lower than normal)
Pain
Sinusitis (inflammation of sinus)
Swelling
Tricuspid valve incompetence (inefficient heart valve)
Humerus fracture (injury to the upper arm bone)
Exostosis (formation of new bone on the surface of a bone)
Osteonecrosis of jaw (death of bone of jaw)
Anaemia (lack of blood)
Dysphagia (a condition in which swallowing is difficult or painful)

60+:

Anxiety
Cardiac failure congestive
Injury
Neck pain
Renal cyst (kidney cyst)
Sinusitis (inflammation of sinus)
Tricuspid valve incompetence (inefficient heart valve)
Adenoma benign (non-cancerous tumour -secreting)
Amblyopia (lazy eye)
Anal candidiasis (rectal fungal infection)

What are the existing conditions these people have? *

Systemic Lupus Erythematosus (an autoimmune disease, which means the body's immune system mistakenly, attacks healthy tissue): 20 people, 32.79%
Pain: 20 people, 32.79%
Osteoporosis (bones weak and more likely to break): 20 people, 32.79%
Multiple Myeloma (cancer of the plasma cells): 15 people, 24.59%
Upper Respiratory Tract Infection: 12 people, 19.67%
Restless Leg Syndrome (a powerful urge to move your legs): 12 people, 19.67%
Muscle Spasms (muscle contraction): 12 people, 19.67%
Bone Lesion (bone with abnormalities. bone lesions can result from growth formations, infections, or injuries): 12 people, 19.67%
Thrombocytopenia (decrease of platelets in blood): 11 people, 18.03%
Fever: 11 people, 18.03%

* Approximation only. Some reports may have incomplete information.

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