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

Summary:

Drug interactions are reported among people who take Micafungin (micafungin sodium) and Valtrex (valacyclovir hydrochloride). Common drug interactions include myocardial infarction among females and pyrexia among males.

The phase IV clinical study analyzes what interactions people have when they take Micafungin and Valtrex. It is created by eHealthMe based on reports of 80 people who take the same drugs from the FDA, and is updated regularly.

What is Micafungin?

Micafungin has active ingredients of micafungin sodium. eHealthMe is studying from 6,562 Micafungin users. Check the latest studies of Micafungin.

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 Jul, 28, 2026

80 people who take Micafungin and Valtrex together, and have interactions are studied.

Micafungin and Valtrex drug interactions.

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

female:

Myocardial infarction (destruction of heart tissue resulting from obstruction of the blood supply to the heart muscle)
Pancytopenia (medical condition in which there is a reduction in the number of red and white blood cells, as well as platelets)
Proctalgia (pain in the rectum)
Abdominal pain upper
Ejection fraction decreased (systolic heart failure)
Febrile neutropenia (fever with reduced white blood cells)
Hepatic cyst
Hyperhidrosis (abnormally increased sweating)
Melaena (the passage of black, tarry stools)
Myoclonus (a brief, involuntary twitching of a muscle or a group of muscles)

male:

Pyrexia (fever)
Sepsis (a severe blood infection that can lead to organ failure and death)
Alanine aminotransferase increased
Febrile neutropenia (fever with reduced white blood cells)
Respiratory failure (inadequate gas exchange by the respiratory system)
Subarachnoid haemorrhage (blood leaks into the space between two membranes that surround the brain)
Aspartate aminotransferase increased
Graft versus host disease (the donated bone marrow or stem cells view the recipient's body as foreign, and the donated cells/bone marrow attack the body)
Ileus (a painful obstruction of the ileum or other part of the intestine)
Blood calcium decreased

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

0-1:

n/a

2-9:

Cellulitis (infection under the skin)
Cytomegalovirus infection
Graft versus host disease (the donated bone marrow or stem cells view the recipient's body as foreign, and the donated cells/bone marrow attack the body)
Hepatic enzyme increased

10-19:

Proctalgia (pain in the rectum)
Neutropenia (an abnormally low number of neutrophils)
Disease progression
Allodynia (a condition in which pain is caused by a stimulus that does not normally elicit pain)
Blast cell count increased
Enterococcal infection
Febrile neutropenia (fever with reduced white blood cells)
Graft versus host disease (the donated bone marrow or stem cells view the recipient's body as foreign, and the donated cells/bone marrow attack the body)
Hepatic failure (liver failure)
Hypotension (abnormally low blood pressure)

20-29:

n/a

30-39:

Haemorrhage intracranial (bleeding within the skull)

40-49:

Febrile neutropenia (fever with reduced white blood cells)
Alanine aminotransferase increased
Blood albumin decreased
Blood bicarbonate increased
Blood bilirubin decreased
Blood calcium decreased
Haematocrit decreased
Haemoglobin decreased
Klebsiella bacteraemia (klebsiella bacteria in blood after infection to lungs)
Lymphocyte count decreased

50-59:

Chills (felling of cold)
Pyrexia (fever)
Blood creatine phosphokinase increased
Bronchitis (inflammation of the mucous membrane in the bronchial tubes)
Bronchopulmonary aspergillosis (lung disorder caused by aspergillus fungi)
Cerumen impaction
Chronic graft versus host disease (immune cells attack the host's body cells after transplant)
Constipation
Dermal cyst
Duodenal ulcer

60+:

Hyperlipidaemia (presence of excess lipids in the blood)
Pyrexia (fever)
Dyskinesia (abnormality or impairment of voluntary movement)
Presyncope
Loss of consciousness
Upper gastrointestinal haemorrhage (upper gastrointestinal bleeding)
Gastrointestinal haemorrhage (bleeding gastrointestinal tract)
Pancytopenia (medical condition in which there is a reduction in the number of red and white blood cells, as well as platelets)
Myocardial infarction (destruction of heart tissue resulting from obstruction of the blood supply to the heart muscle)
Abdominal pain upper

What are the existing conditions these people have? *

Acute Myeloid Leukaemia (acute cancer in which the bone marrow makes abnormal myeloblasts): 30 people, 37.50%
Insomnia (sleeplessness): 27 people, 33.75%
Atrial Fibrillation/flutter (atrial fibrillation and flutter are abnormal heart rhythms in which the atria, or upper chambers of the heart, are out of sync with the ventricles): 18 people, 22.50%
Cardiac Amyloidosis (protein deposition in heart): 17 people, 21.25%
Dyslipidaemia (abnormal amount of lipids): 17 people, 21.25%
Nausea (feeling of having an urge to vomit): 14 people, 17.50%
Constipation: 14 people, 17.50%
Fever: 14 people, 17.50%
Diarrhea: 12 people, 15.00%
Pain: 10 people, 12.50%

* Approximation only. Some reports may have incomplete information.

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