Brand name: Zyloric
Pronounced: ZYE-loric
Generic name: Allopurinol , ZYLORIC (Lopurin, Zyloprim)
Why is Zyloric prescribed?

Zyloric is used in the treatment of many symptoms of gout, including acute attacks, tophi (collection of uric acid crystals in the tissues, especially around joints), joint destruction, and uric acid stones. Gout is a form of arthritis characterized by increased blood levels of uric acid. Zyloric works by reducing uric acid production in the body, thus preventing crystals from forming.

Zyloric is also used to manage the increased uric acid levels in the blood of people with certain cancers, such as leukemia. It is also prescribed to manage some types of kidney stones.
Most important fact about Allopurinol , ZYLORIC (Lopurin, Zyloprim)

Zyloric will not stop a gout attack that is already underway. However, when taken over a period of several months, Zyloric will begin to reduce your symptoms. It's important to keep taking it regularly, even if it seems to have no immediate effect.
How should you take Zyloric?

Take Zyloric exactly as prescribed. Your doctor will probably start you on a low dosage, increasing it gradually each week until you reach the dosage that is best for you.

A typical starting dose is one 100-milligram tablet per day. You may want to take Zyloric immediately after a meal to minimize the risk of stomach irritation.

You should avoid taking large doses of vitamin C because of the increased possibility of kidney stone formation.

While taking Zyloric you should drink plenty of liquids--10 to 12 glasses (8 ounces each) per day--unless otherwise prescribed by your doctor.

To help prevent attacks of gout, you should also avoid beer, wine, and purine-rich foods such as anchovies, sardines, liver, kidneys, lentils, and sweetbreads.

If you have been taking colchicine and/or an anti-inflammatory drug, such as Anaprox, Indocin, and others, to relieve your gout, your doctor will probably want you to continue taking this medication while your Zyloric dosage is being adjusted. Later, when you have had no attacks of gout for several months, you may be able to stop taking these other medications.

If you have been taking a drug that promotes the excretion of uric acid in the urine, such as probenecid (Benemid) or sulfinpyrazone (Anturane), to try to prevent attacks of gout, your doctor will probably want to reduce or stop your dosage of Zyloric while increasing your dosage of Zyloric.

If you miss a dose Allopurinol , ZYLORIC (Lopurin, Zyloprim)

Take it as soon as you remember. If it is almost time for your next dose, skip the one you missed and go back to your regular schedule. Do not take 2 doses at once.

Storage instructions Allopurinol , ZYLORIC (Lopurin, Zyloprim)

Store at room temperature in a cool, dry place, away from light.
Zyloric side effects

Side effects cannot be anticipated. If any develop or change in intensity, inform your doctor as soon as possible. Only your doctor can determine if it is safe for you to continue taking Zyloric.

Because a skin reaction, the most common side effect of Zyloric, may occasionally become severe or even fatal, you should stop taking Zyloric if you notice even the beginnings of a rash. Such a rash may be itchy or scaly or may make your skin peel off in sheets; it may be accompanied by chills and fever, aching joints, or jaundice.

* Side effects may include:
Acute attack of gout, diarrhea, nausea, rash

Why should Zyloric not be prescribed?

Do not take Zyloric if you have ever had a severe reaction to it in the past.
Special warnings about Zyloric without prescriptions/Rx

If you notice a rash or other signs of an allergic reaction, stop taking Zyloric immediately and consult your doctor. In some people, a Zyloric-induced rash may lead to a serious skin disease, generalized inflammation of a blood or lymph vessel, irreversible liver damage, or even death.

You may experience acute attacks of gout more often in the early stages of Zyloric therapy, even when normal uric acid levels have been attained. These attacks will become shorter and less severe after several months of therapy.

A kidney problem may turn a normal dose of Zyloric into an overdose. If you have a kidney disease, or a condition such as diabetes or high blood pressure that may affect your kidneys, your doctor should prescribe Zyloric cautiously and order periodic blood and urine tests to assess your kidney function.

Because Zyloric may make you drowsy, do not drive or perform hazardous tasks until you know how Zyloric affects you.

It may be 2 to 6 weeks before you see any results from this medication.
Possible food and drug interactions when taking Zyloric

If Zyloric is taken with certain other drugs, the effects of either could be increased, decreased, or altered. It is especially important to check with your doctor before combining Zyloric with the following:

Amoxicillin (Amoxil, Trimox, Wymox)
Ampicillin (Omnipen, Principen)
Azathioprine (Imuran)
Blood thinners such as Coumadin
Cyclosporine (Sandimmune, Neoral)
Drugs for diabetes, such as Diabinese and Orinase
Mercaptopurine (Purinethol)
Probenecid (Benemid, ColBENEMID)
Sulfinpyrazone (Anturane)
Theophylline (Theo-Dur, Slo-Phyllin, and others)
Thiazide diuretics such as HydroDIURIL, Diuril, and others
Vitamin C
Special information if you are pregnant or breastfeeding

The effects of Zyloric during pregnancy have not been adequately studied. If you are pregnant or plan to become pregnant, notify your doctor immediately. Zyloric should be taken during pregnancy only if it is clearly needed.

Zyloric appears in breast milk; what effect it may have on a nursing baby is unknown. Caution is advised when Zyloric is taken during breastfeeding.
Recommended dosage for Allopurinol , ZYLORIC (Lopurin, Zyloprim)

ADULTS
Overdosage

Although no specific information is available regarding Zyloric overdosage, any medication taken in excess can have serious consequences. If you suspect an overdose of Zyloric, seek medical attention immediately.