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

Summary:

Drug interactions are reported among people who take Effexor (venlafaxine hydrochloride) and Valacyclovir hydrochloride (valacyclovir hydrochloride). Common drug interactions include fructose intolerance among females and pain among males.

The phase IV clinical study analyzes what interactions people have when they take Effexor and Valacyclovir hydrochloride. It is created by eHealthMe based on reports of 69 people who take the same drugs from the FDA, and is updated regularly.

What is Effexor?

Effexor has active ingredients of venlafaxine hydrochloride. It is often used in depression. eHealthMe is studying from 99,493 Effexor users. Check the latest studies of Effexor.

What is Valacyclovir hydrochloride?

Valacyclovir hydrochloride has active ingredients of valacyclovir hydrochloride. It is often used in herpes zoster. eHealthMe is studying from 12,929 Valacyclovir hydrochloride users. Check the latest studies of Valacyclovir hydrochloride.

On Jul, 10, 2026

69 people who take Effexor and Valacyclovir hydrochloride together, and have interactions are studied.

Effexor and Valacyclovir hydrochloride drug interactions.

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

female:

Fructose intolerance
Head injury
Hepatic vein thrombosis (obstruction in the veins of the liver caused by a blood clot)
Hip arthroplasty
Hospitalisation
Hunger
Hypoglycaemia (deficiency of glucose in the bloodstream)
Inguinal hernia (hernia in which a loop of intestine enters the inguinal canal; the most common type of hernia in males)
Limb injury
Malabsorption (a state arising from abnormality in absorption of food nutrients across the gastrointestinal (gi) tract)

male:

Pain
Anhedonia (inability to experience pleasure from activities usually found enjoyable)
Bone density decreased
Carpal tunnel syndrome (nerve compression at wrist results numbness weakness, pain , swelling)
Chronic kidney disease
Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body)
Drug abuse
Drug dependence
Dysstasia (difficulty in standing)
Gait disturbance

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

0-1:

n/a

2-9:

n/a

10-19:

Drug dependence
Overdose

20-29:

n/a

30-39:

Asthma
Cough
Cytokine release syndrome (immediate complication occurring with the use of anti-t cell antibody infusions)
Fatigue (feeling of tiredness)
Pain
Pneumonia adenoviral (viral pneumonia caused by an adenovirus)
Upper-airway cough syndrome
Gestational diabetes (diabetes in pregnancy)
Hepatic enzyme increased
Intentional self-injury

40-49:

Diarrhoea
Abdominal pain
Foot fracture
Frontal lobe epilepsy (recurring seizures that arise in the frontal lobes of the brain)
Head injury
Hepatic vein thrombosis (obstruction in the veins of the liver caused by a blood clot)
Hospitalisation
Hunger
Limb injury
Muscle rupture (tear in muscle)

50-59:

Tooth fracture
Urinary incontinence (inability to control the flow of urine and involuntary urination)
Vision blurred
Agranulocytosis (a deficiency of granulocytes in the blood, causing increased vulnerability to infection)
Anhedonia (inability to experience pleasure from activities usually found enjoyable)
Blood creatinine increased
Chronic kidney disease
Ejaculation failure
Emotional distress
Erectile dysfunction

60+:

Neutropenia (an abnormally low number of neutrophils)
Thrombocytopenia (decrease of platelets in blood)
Musculoskeletal stiffness (stiffness of the body's muscles, joints, tendons, ligaments and nerves)
Peripheral swelling
Weight increased
Anaemia (lack of blood)
Crohn's disease (a condition that causes inflammation of the gastrointestinal tract)
Abdominal pain
Arthralgia (joint pain)
Asthenia (weakness)

What are the existing conditions these people have? *

Pain: 18 people, 26.09%
Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 12 people, 17.39%
Cataplexy (loss of muscle tone accompanied by full conscious awareness): 12 people, 17.39%
Drowsiness: 11 people, 15.94%
Stress And Anxiety: 11 people, 15.94%
Insomnia (sleeplessness): 8 people, 11.59%
Short-Bowel Syndrome (a condition in which the body cannot absorb enough fluids and nutrients because part of the small intestine is missing): 7 people, 10.14%
Neuralgia (pain in one or more nerves): 6 people, 8.70%
Menopause (end of monthly cycles in women): 5 people, 7.25%
Hiv Infection: 5 people, 7.25%

* Approximation only. Some reports may have incomplete information.

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