Valacyclovir Side Effects by Likelihood and Severity
COMMON side effects
If experienced, these tend to have a Less Severe expression
- Headache
- Intense Abdominal Pain
- Nausea
INFREQUENT side effects
If experienced, these tend to have a Severe expression
- A High Alanine Transaminase Level
- Pain With Menstruation
If experienced, these tend to have a Less Severe expression
- Constipation
- Decreased Appetite
- Diarrhea
- Dizziness
- Joint Pain
- Low Energy
- Vomiting
RARE side effects
If experienced, these tend to have a Severe expression
- A Change In Vision
- A Significant Type Of Allergic Reaction Called Anaphylaxis
- A Type Of Allergic Reaction Called Angioedema
- A Type Of Brain Function Problem Called Encephalopathy
- A Type Of Significant Allergic Skin Reaction Called DRESS Syndrome
- Coma
- Decreased Blood Platelets
- Erythema Multiforme, A Type Of Allergic Skin Reaction
- Hemolytic Uremic Syndrome, A Condition That Affects The Kidney And The Blood
- High Blood Pressure
- Hives
- Inflammation Of The Liver Called Hepatitis
- Kidney Failure
- Low Blood Counts Due To Bone Marrow Failure
- Low Levels Of A Type Of White Blood Cell Called Neutrophils
- Low Levels Of White Blood Cells
- Mental Problems From Taking The Drug
- Puffy Face From Water Retention
- Seizures
- Thrombotic Microangiography
- Thrombotic Thrombocytopenic Purpura, A Type Of Blood Disorder
- Trouble Breathing
If experienced, these tend to have a Less Severe expression
- A Skin Rash
- Aggressive Behavior
- Agitation
- Confusion
- Fast Heartbeat
- Hair Loss
- Hallucinations
- Increased Sensitivity Of The Skin To The Sun
- Itching
- Kidney Pain
- Loss Of Muscle Coordination
- Manic Behavior
- Muscle Tremors
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CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.