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

Summary:

Drug interactions are reported among people who take Namenda (memantine hydrochloride) and Flagyl (metronidazole). Common drug interactions include asthenia among females and anxiety among males.

The phase IV clinical study analyzes what interactions people have when they take Namenda and Flagyl. It is created by eHealthMe based on reports of 30 people who take the same drugs from the FDA, and is updated regularly.

What is Namenda?

Namenda has active ingredients of memantine hydrochloride. It is often used in dementia. eHealthMe is studying from 14,283 Namenda users. Check the latest studies of Namenda.

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 Aug, 09, 2026

30 people who take Namenda and Flagyl together, and have interactions are studied.

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

female:

Asthenia (weakness)
Cardiac murmur (an heart sound in valve abnormality)
Clostridium difficile colitis (inflammation of colon by clostridium difficile bacteria infection)
Decreased immune responsiveness
Dehydration (dryness resulting from the removal of water)
Dysphagia (a condition in which swallowing is difficult or painful)
Gastrointestinal haemorrhage (bleeding gastrointestinal tract)
Hyperkalaemia (damage to or disease of the kidney)
Hypertensive heart disease
Hypotension (abnormally low blood pressure)

male:

Anxiety
Depression
Lentigo (a small pigmented spot on the skin with a clearly-defined edge, surrounded by normal-appearing skin)
Lumbar radiculopathy (radicular pain in the low back and legs)
Melanocytic naevus (a type of lesion that contains nevus cells (a type of melanocyte))
Neuropathy peripheral (surface nerve damage)
Obsessive-compulsive disorder (an anxiety disorder characterized by intrusive thoughts that produce uneasiness, apprehension, fear, or worry;)
Paraesthesia (sensation of tingling, tickling, prickling, pricking, or burning of a person's skin with no apparent long-term physical effect)
Polyp
Rectal haemorrhage (bleeding from anus)

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

0-1:

n/a

2-9:

n/a

10-19:

Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body)
Pain

20-29:

n/a

30-39:

n/a

40-49:

Drug ineffective
Encephalopathy (functioning of the brain is affected by some agent or condition)
Fall
Headache (pain in head)
Intervertebral disc degeneration (spinal disc degeneration)
Lumbar spinal stenosis (a medical condition in which the spinal canal narrows and compresses the spinal cord and nerves at the level of the lumbar bone)
Mental status changes (general changes in brain function, such as confusion, amnesia (memory loss), loss of alertness, loss of orientation)
Migraine (headache)
Myelopathy (any neurologic deficit related to the spinal cord)
Personality disorder

50-59:

n/a

60+:

Anxiety
Dehydration (dryness resulting from the removal of water)
Pneumonia
Renal failure acute (rapid kidney dysfunction)
Drug hypersensitivity
Abdominal distension
Acute respiratory failure
Anaemia (lack of blood)
Arthralgia (joint pain)
Asthenia (weakness)

What are the existing conditions these people have? *

Pain: 7 people, 23.33%
Constipation: 4 people, 13.33%
Dementia Alzheimer's Type (loss of mental ability with alzheimer's symptom): 4 people, 13.33%
Affective Disorder (mental disorder): 3 people, 10.00%
Stress And Anxiety: 3 people, 10.00%
Cataplexy (loss of muscle tone accompanied by full conscious awareness): 3 people, 10.00%
Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 3 people, 10.00%
Major Depression (a mood state that goes well beyond temporarily feeling sad or blue. it is a serious medical illness that affects one's thoughts, feelings): 3 people, 10.00%
Headache (pain in head): 2 people, 6.67%
Aggression: 2 people, 6.67%

* Approximation only. Some reports may have incomplete information.

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