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

Summary:

Drug interactions are reported among people who take Asa (aspirin) and Flagyl (metronidazole). Common drug interactions include alopecia among females and abdominal pain among males.

The phase IV clinical study analyzes what interactions people have when they take Asa and Flagyl. It is created by eHealthMe based on reports of 96 people who take the same drugs from the FDA, and is updated regularly.

What is Asa?

Asa has active ingredients of aspirin. It is often used in blood clots. eHealthMe is studying from 32,557 Asa users. Check the latest studies of Asa.

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.

On Jul, 17, 2026

96 people who take Asa and Flagyl together, and have interactions are studied.

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

female:

Alopecia (absence of hair from areas of the body)
Anaemia (lack of blood)
Blood albumin decreased
Blood glucose increased
Blood thyroid stimulating hormone increased
C-reactive protein increased
Colitis (inflammation of colon)
Colitis ulcerative (inflammation of colon with ulcer)
Colon dysplasia (abnormal growth or development of cells of colon)
Fall

male:

Abdominal pain
Asthenia (weakness)
Chest pain
Nausea (feeling of having an urge to vomit)
Pallor
Pericarditis (inflammation of the pericardium)
Postoperative wound infection
Spinal osteoarthritis (joint cartilage loss in spine)
Plasma cell myeloma (cancer that begins in plasma cells)
Amnesia (deficit in memory caused by brain damage, disease, or psychological trauma)

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

Drug hypersensitivity

30-39:

n/a

40-49:

Abdominal pain
Diarrhoea infectious (bacteria, viruses, and other germs can cause diarrhoea)
Pyrexia (fever)
Colitis (inflammation of colon)
Drug ineffective
Asthenia (weakness)
Myocardial infarction (destruction of heart tissue resulting from obstruction of the blood supply to the heart muscle)
Nausea (feeling of having an urge to vomit)
Nephrolithiasis (calculi in the kidneys)
Pallor

50-59:

Dizziness
Dyspnoea (difficult or laboured respiration)
Hyperhidrosis (abnormally increased sweating)
Hypotension (abnormally low blood pressure)
Infusion related reaction
Myocardial infarction (destruction of heart tissue resulting from obstruction of the blood supply to the heart muscle)
Oedema (fluid collection in tissue)
Optic neuropathy (optic nerve damage)
Orthostatic hypotension (a medical condition consisting of a sudden decrease in blood pressure when a person stands up)
Tachycardia (a heart rate that exceeds the range of 100 beats/min)

60+:

Drug hypersensitivity
Pain
Aspartate aminotransferase increased
Blood alkaline phosphatase increased
Cerebrovascular accident (sudden death of some brain cells due to lack of oxygen when the blood flow to the brain is impaired by blockage or rupture)
Dehydration (dryness resulting from the removal of water)
General physical health deterioration (weak health status)
Leukocytosis (increased white blood cells)
Pyrexia (fever)
Rectal haemorrhage (bleeding from anus)

What are the existing conditions these people have? *

Multiple Myeloma (cancer of the plasma cells): 15 people, 15.62%
High Blood Pressure: 12 people, 12.50%
Pain: 10 people, 10.42%
Diarrhea Infectious: 10 people, 10.42%
Nausea (feeling of having an urge to vomit): 9 people, 9.38%
Crohn's Disease (a condition that causes inflammation of the gastrointestinal tract): 8 people, 8.33%
High Blood Cholesterol: 5 people, 5.21%
Adverse Event: 5 people, 5.21%

* Approximation only. Some reports may have incomplete information.

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