Mucinex dm and Valacyclovir drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Mucinex dm (dextromethorphan hydrobromide; guaifenesin) and Valacyclovir (valacyclovir hydrochloride). Common drug interactions include vomiting among females and anxiety among males.

The phase IV clinical study analyzes what interactions people have when they take Mucinex dm and Valacyclovir. It is created by eHealthMe based on reports of 50 people who take the same drugs from the FDA, and is updated regularly.

What is Mucinex dm?

Mucinex dm has active ingredients of dextromethorphan hydrobromide; guaifenesin. It is often used in cough. eHealthMe is studying from 3,604 Mucinex dm users. Check the latest studies of Mucinex dm.

What is Valacyclovir?

Valacyclovir has active ingredients of valacyclovir hydrochloride. It is often used in genital herpes. eHealthMe is studying from 42,107 Valacyclovir users. Check the latest studies of Valacyclovir.

On Aug, 02, 2026

50 people who take Mucinex dm and Valacyclovir together, and have interactions are studied.

Mucinex dm and Valacyclovir drug interactions.

What are the common drug interactions of Mucinex Dm and Valacyclovir, by gender? *:

female:

Vomiting
Breast cancer
Pneumonia
Bronchitis (inflammation of the mucous membrane in the bronchial tubes)
Diarrhoea
Rash
Ear infection
Malaise (a feeling of general discomfort or uneasiness)
Platelet count decreased
Pyrexia (fever)

male:

Anxiety
Diarrhoea
Chronic kidney disease
Constipation
Death
Depression
Drug ineffective
Emotional distress
Gastrointestinal disorder (functional problems of gastrointestinal tract)
Glycosylated haemoglobin increased

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

Anxiety
Blood cholesterol increased
Musculoskeletal discomfort (discomfort in the body's muscles, joints, tendons, ligaments and nerves)
Suicidal ideation

30-39:

n/a

40-49:

n/a

50-59:

Abdominal discomfort
Blood immunoglobulin a increased
Cellulitis (infection under the skin)
Ear infection
Incision site pain
Malaise (a feeling of general discomfort or uneasiness)
Productive cough
Pyrexia (fever)
Rash
Somnolence (a state of near-sleep, a strong desire for sleep)

60+:

Diarrhoea
Death
Femur fracture
Fluid retention (an abnormal accumulation of fluid in the blood)
Frequent bowel movements
Gastric ulcer haemorrhage (bleeding ulcer of stomach)
Heart rate increased
Hypotension (abnormally low blood pressure)
Ill-defined disorder
Infusion site erythema (reddening of the skin at infusion site)

What are the existing conditions these people have? *

Multiple Myeloma (cancer of the plasma cells): 15 people, 30.00%
Immunodeficiency Common Variable: 8 people, 16.00%
Type 1 Diabetes: 6 people, 12.00%
Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 6 people, 12.00%
Stable Angina (a constant chest pain): 5 people, 10.00%
Chronic Kidney Disease: 5 people, 10.00%
Pain: 3 people, 6.00%

* Approximation only. Some reports may have incomplete information.

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