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

Summary:

Drug interactions are reported among people who take Omnicef (cefdinir) and Valacyclovir (valacyclovir hydrochloride). Common drug interactions include chronic kidney disease among females and bacteraemia among males.

The phase IV clinical study analyzes what interactions people have when they take Omnicef and Valacyclovir. It is created by eHealthMe based on reports of 11 people who take the same drugs from the FDA, and is updated regularly.

What is Omnicef?

Omnicef has active ingredients of cefdinir. It is often used in sinusitis. eHealthMe is studying from 2,774 Omnicef users. Check the latest studies of Omnicef.

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 Jul, 20, 2026

11 people who take Omnicef and Valacyclovir together, and have interactions are studied.

Omnicef and Valacyclovir drug interactions.

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

female:

Chronic kidney disease
Asthenia (weakness)
Confusional state
Contusion (a type of hematoma of tissue in which capillaries)
Cough
Fatigue (feeling of tiredness)
Haematoma (collection of blood outside the blood vessels)
Hypogammaglobulinaemia (an abnormally low concentration of gamma globulin in the blood and increased risk of infection)
Increased tendency to bruise (increased tendency to injure the underlying soft tissue or bone)
Pharyngitis streptococcal (inflammation of the pharynx caused by infection from. streptococcus)

male:

Bacteraemia (presence of bacteria in the blood)
Cytomegalovirus viraemia (cytomegalo virus in blood stream)
Pneumonia fungal
Pneumonia viral
Post procedural infection
Staphylococcal bacteraemia (a bacterial infection of blood)
Thrombocytopenia (decrease of platelets in blood)
White blood cell count decreased
Device related infection
Haematocrit decreased

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

n/a

40-49:

Chronic kidney disease

50-59:

Pneumonia
Thrombocytopenia (decrease of platelets in blood)

60+:

Asthenia (weakness)
Confusional state
Bacteraemia (presence of bacteria in the blood)
Chronic kidney disease
Cytomegalovirus viraemia (cytomegalo virus in blood stream)
Device related infection
Haematocrit decreased
Haemoglobin decreased
Haemorrhage (bleeding)
Klebsiella bacteraemia (klebsiella bacteria in blood after infection to lungs)

What are the existing conditions these people have? *

Hypokalemia (low potassium): 5 people, 45.45%
Nausea And Vomiting: 5 people, 45.45%
Nausea (feeling of having an urge to vomit): 5 people, 45.45%
Pain: 4 people, 36.36%
Bone Pain: 4 people, 36.36%
Constipation: 4 people, 36.36%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 3 people, 27.27%
Type 2 Diabetes: 3 people, 27.27%
Stress And Anxiety: 3 people, 27.27%
High Blood Pressure: 3 people, 27.27%

* Approximation only. Some reports may have incomplete information.

Do you take Omnicef and Valacyclovir?

- Personalize this study to your gender, age, symptoms and drugs
- Predict drug outcomes for up to one year with AI
- Get an AI agent to monitor your drugs continuously