My watch list
my.bionity.com  
Login  

Hydroxyurea



Hydroxyurea
Systematic (IUPAC) name
hydroxyurea
Identifiers
CAS number 127-07-1
ATC code L01XX05
PubChem 3657
DrugBank APRD00023
Chemical data
Formula CH4N2O2 
Mol. mass 76.0547 g/mol
Pharmacokinetic data
Bioavailability  ?
Metabolism Liver
Half life 3-4 hours
Excretion Renal and lungs
Therapeutic considerations
Pregnancy cat.

D (USA)

Legal status
Routes Oral

Hydroxyurea or hydroxycarbamide (the latter being the recommended International Non-Proprietary Name), (brand names include Hydrea® and Droxia®) is an antineoplastic drug used in hematological malignancies. It is also used as an antiretroviral agent (e.g., against HIV).

Contents

Mechanism

Its mechanism of action is believed to be based on its inhibition of the enzyme ribonucleotide reductase by scavenging tyrosyl free radicals[1] as they are involved in the reduction NDPs.[2]

Uses

Dose

500 milligrams once or twice a day, or more if pancytopenia does not develop.

Side effects

Reported side-effects are: drowsiness, nausea, vomiting and diarrhea, constipation, mucositis, anorexia, stomatitis, bone marrow toxicity (which may take 7-21 days to recover after the drug has been discontinued), alopecia (hair loss), skin changes, abnormal liver enzymes, creatinine and blood urea nitrogen.

Due to its effect on the bone marrow, regular monitoring of the full blood count is vital, as well as early response to possible infections. In addition, renal function, uric acid and electrolytes, as well as liver enzymes, are commonly checked.

Use in pregnancy

Category D - investigational or post-marketing data show risk to the fetus. However, potential benefits may outweigh the potential risk. Generally this rating is reserved for drugs with no safer alternatives.

Contraindications

Contraindications are: severe anemia, bone marrow depression or neutropenia.

References

  1. ^ http://www.medscape.com/viewarticle/408266_8
  2. ^ http://www.ncbi.nlm.nih.gov/books/bv.fcgi?rid=stryer.section.3503
 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Hydroxyurea". A list of authors is available in Wikipedia.
Your browser is not current. Microsoft Internet Explorer 6.0 does not support some functions on Chemie.DE