Severe worsening of hepatitis (rarely including death) has occurred when adefovir dipivoxil has been discontinued. When you are instructed to stop taking this medication, your doctor will monitor you closely for signs of worsening hepatitis. Be sure to keep all doctor and laboratory appointments after you stop taking this drug.
Infrequently, severe (sometimes fatal) liver and blood acid-base balance problems (lactic acidosis) have occurred while using a similar type of medication (nucleoside analogs such as didanosine or stavudine). Notify your doctor immediately if you develop unusual weakness or fatigue, dark urine, yellowing of the skin or eyes, abdominal or stomach pain, drowsiness, muscle aches or weakness, trouble breathing (e.g., rapid breathing or very shallow breathing), or fast or irregular heartbeat.
In patients with kidney disease, adefovir dipivoxil can cause kidney damage. Notify your doctor immediately if you develop a change in the amount of urine that you produce.
If you get or have HIV infection that is not being treated with medication, adefovir dipivoxil may cause your HIV infection to become untreatable with the usual HIV drugs (development of HIV resistance). Consult your doctor or pharmacist for more details.
Before taking adefovir, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: HIV infection, kidney problems, liver transplant, being very overweight (obese).
This medication should be used only when clearly needed during pregnancy. Discuss the risks and benefits with your doctor.
It is unknown if this medication passes into breast milk. Consult your doctor before breast-feeding.
Weakness, headache, fever, increased cough, nausea, vomiting, diarrhea, or gas may occur. If any of these effects persist or worsen, notify your doctor promptly.
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor immediately if this very unlikely but serious side effect occurs: change in the amount of urine.
For additional side effects see Warning section.
An allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of an allergic reaction include: rash, itching/swelling (especially of the face/tongue/throat), dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
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