Fasenra and Valtrex drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Fasenra (benralizumab) and Valtrex (valacyclovir hydrochloride). Common drug interactions include rash among females and disseminated intravascular coagulation among males.

The phase IV clinical study analyzes what interactions people have when they take Fasenra and Valtrex. It is created by eHealthMe based on reports of 13 people who take the same drugs from the FDA, and is updated regularly.

What is Fasenra?

Fasenra has active ingredients of benralizumab. eHealthMe is studying from 11,805 Fasenra users. Check the latest studies of Fasenra.

What is Valtrex?

Valtrex has active ingredients of valacyclovir hydrochloride. It is often used in genital herpes. eHealthMe is studying from 39,999 Valtrex users. Check the latest studies of Valtrex.

On Aug, 09, 2026

13 people who take Fasenra and Valtrex together, and have interactions are studied.

What are the common drug interactions of Fasenra and Valtrex, by gender? *:

female:

Rash
Alopecia (absence of hair from areas of the body)
Arthralgia (joint pain)
Asthenia (weakness)
Cough
Seizure (abnormal excessive or synchronous neuronal activity in the brain)
Somnolence (a state of near-sleep, a strong desire for sleep)
Abdominal discomfort
Body height decreased
Drug ineffective

male:

Disseminated intravascular coagulation (systemic activation of blood coagulation)
Hypofibrinogenaemia (a decrease in plasma fibrogen level)
Oedema peripheral (superficial swelling)
Oxygen saturation decreased
Pneumonia
Pyrexia (fever)
Respiratory failure (inadequate gas exchange by the respiratory system)
Septic shock (shock due to blood infection)
Shock haemorrhagic (a life-threatening condition with symptoms like low blood pressure, weakness, shallow breathing, cold, clammy skin due to excess bleeding)
Toxic epidermal necrolysis (a rare, life-threatening skin condition that is usually caused by a reaction to drugs causes wide spread skin destruction)

What are the common drug interactions of Fasenra and Valtrex, 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:

n/a

50-59:

Alopecia (absence of hair from areas of the body)

60+:

Arthralgia (joint pain)
Asthenia (weakness)
C-reactive protein increased
Death
Drug resistance (reduction in effectiveness of a drug)
Dry skin
Gastrointestinal haemorrhage (bleeding gastrointestinal tract)
Haemodynamic instability (disturbances in the blood movement in our body)
Intestinal ischaemia (decreased supply of oxygenated blood to the intestines)
Oedema peripheral (superficial swelling)

What are the existing conditions these people have? *

Asthma: 9 people, 69.23%
Septic Shock (shock due to blood infection): 2 people, 15.38%
Multiple Myeloma (cancer of the plasma cells): 2 people, 15.38%
Wheezing (a high-pitched whistling sound made while you breath): 1 person, 7.69%
Weakness: 1 person, 7.69%
Thyroid Diseases: 1 person, 7.69%
Rashes (redness): 1 person, 7.69%
Neuralgia (pain in one or more nerves): 1 person, 7.69%
High Blood Cholesterol: 1 person, 7.69%
Herpes Zoster: 1 person, 7.69%

* Approximation only. Some reports may have incomplete information.

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