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AllopurinolThis page contains recent news articles, when available, and an overview of Allopurinol but does not offer medical advice. You should contact your physician with regard to any health issues or concerns.Overview: Allopurinol (when available) Ascorbic Acid (vitamin C) is a water-soluble vitamin indicated for the prevention and treatment of scurvy, as ascorbic acid deficiency results in scurvy. Collagenous structures are primarily affected, and lesions develop in bones and blood vessels. Administration of ascorbic acid completely reverses the symptoms of ascorbic acid deficiency. Used to treat vitamin C deficiency, scurvy, delayed wound and bone healing, urine acidification, and in general as an antioxidant. It has also been suggested to be an effective antiviral agent. Mechanism Of Action: In humans, an exogenous source of ascorbic acid is required for collagen formation and tissue repair by acting as a cofactor in the posttranslational formation of 4-hydroxyproline in -Xaa-Pro-Gly- sequences in collagens and other proteins. Ascorbic acid is reversibly oxidized to dehydroascorbic acid in the body. These two forms of the vitamin are believed to be important in oxidation-reduction reactions. The vitamin is involved in tyrosine metabolism, conversion of folic acid to folinic acid, carbohydrate metabolism, synthesis of lipids and proteins, iron metabolism, resistance to infections, and cellular respiration. News Articles on Vitamin C é™?å°¿é…¸è—¥å°‡åŠ è¨»é?Žæ•?å?ŠåŸºå› ç¯©æª¢å»ºè° - 30 Aug 2009 ...〔ä¸å¤®ç¤¾ã€•常見的é™?尿酸藥物æˆ?分allopurinol在å?°ç?£å‚³å‡º62ä»¶åš´é‡?藥物é?Žæ•?事件,衛生署最新公告è¦?求å?«æ¤æˆ?分的藥å“?æ‡‰åŠ è¨»ç›¸é—œè¦èªžï¼Œä¸¦å»ºè°åˆ?使用者檢測HLA-B*5801é?Žæ•? 自由時報 Stevens-Johnson Syndrome Malpractice Lawsuit Results in $6M Verdict - Aug 11, 2009 According to the Stevens-Johnson syndrome malpractice lawsuit, the plaintiff alleged that an osteopathic physician put her on Allopurinol to treat gout, AboutLawsuits.com The Law Offices of Brian D. Witzer Wins 6+ Million Dollar Verdict - Aug 6, 2009 He prescribed Allopurinol in order to prevent a recurrence of an acute gout attack. Plaintiff made a statutory offer to compromise the claim in January 2009 PR Newswire (press release) Bontoc Hospital gets additional packages of medicine - Aug 28, 2009 Based on the list of medicines under the P100, the additional medicines received by BoGH include Allopurinol 100mg (30 tablets for P50.00), Philippine Information Agency Start Nutrition Intervention Early - Aug 18, 2009 Results demonstrated that those patients who were compliant on the 0.55 g/kg/day took significantly less phosphate binders, allopurinol, bicarbonate, Renal and Urology News Savient Pharma (SVNT) Lower On FDA Refusal of Gout Treatment, But ... - Aug 3, 2009 ...proposed a benign REMS that is limited to patient/physician monitoring and a broad filed a BLA label (inadequate responders to allopurinol or Uloric). StreetInsider.com (subscription) Nabi Biopharmaceuticals Reports Operating Results (10-Q) - Aug 6, 2009 In June 2007, we sold certain assets related to our product Aloprim (allopurinol sodium for Injection) for $3.7 million. On December 4, 2007, GuruFocus.com Charles Bonnet syndrome: visual loss and hallucinations - Aug 3, 2009 He was also taking tamsulosin and dutasteride for benign prostatic hypertrophy and allopurinol for gout. None of his medications had been changed before the CMAJ Ardea Biosciences Reports Recent Accomplishments and Announces ... - Aug 7, 2009 This was comparable to patients receiving a standard dose of allopurinol (300 mg QD) and significantly better than placebo. RDEA594 was also well tolerated FOXBusiness Doctor's advice: Gout hits all income levels, but mainly men - Aug 25, 2009 To prevent gout attacks from recurring, Zyloprim (allopurinol) stops uric acid production. Or Benemid (probenecid) prods the kidneys to remove more of it. Palm Beach Post Espacio público - Aug 22, 2009 El medicamento que predominantemente prescriben los veterinarios de Misiones es el Allopurinol ,que es una droga que en humanos se usa para bajar el nivel TerritorioDigital.com å› è¯¯è¯Šèº«å¿ƒä¿±ä¼¤ 美å?Žè£”è€?妇获600万赔款得慰藉 - Aug 8, 2009 ...è€?太太长期æœ?用谢医师开给她的安ä¹?普利诺(Allopurinol),该è?¯é€šå¸¸æ˜¯æ²»ç–—痛风病用的。然而,è€?太太说她并没有痛风,也从æ?¥æ²¡æœ‰å‘Šè¯‰åŒ»å¸ˆå¥¹æœ‰ç—›é£Žç—…。 中新网 身心俱傷 ç?²600è?¬è³ 款得一絲慰藉 律師:誤診é‡?創è?¯è£”è€?婦 - Aug 8, 2009 ...è€?太太長期æœ?用è¬?醫師開給她的安樂普利諾(Allopurinol),該藥通常是治療痛風病用的。然而,è€?太太說她並沒有痛風,也從來沒有告訴醫師她有痛風病。 香港新浪網 Espacio público - Aug 10, 2009 En Google se puede leer que el Allopurinol, una droga de uso humano para la gota, está contraindicado en las personas con enfermedades del riñón porque es TerritorioDigital.com Family doctor: Old, but good, treatment works for gout - Jul 1, 2009 One day, a young female intern suggested I ask my doctor to give me a prescription for allopurinol, 100 milligrams. Well, I did, and I haven't had an attack Canton Repository They cut my throat - Jul 6, 2009 Honestly I felt like a healthy spring colt free in a beautiful pasture except I needed an allopurinol refill to forestall gout. Cordele Dispatch FDA, BMS Change Videx Labeling to Add Warnings - Jul 6, 2009 The FDA has changed labeling for Bristol-Myers Squibb's (BMS) HIV drug Videx to show that taking allopurinol or ribavirin is contraindicated while on the FDA news (subscription) FDA Safety Changes: Prevpac, Arava, Treanda - Jul 1, 2009 Cases of Stevens-Johnson syndrome and TEN, some fatal, were also reported when bendamustine was administered concomitantly with allopurinol and other agents Medscape New Report Just Published: World Multiple Myeloma Therapeutics ... - Jul 7, 2009 ...of Combination Drug DOXIL(R) and VELCADE(R) II-43 Caraco's Allopurinol Receives FDA Approval II-43 FDA Approves Thalomid(R) as Combination Therapy for PR Newswire (press release) Nearly forgotten, gout stages a comeback - Jun 21, 2009 Uloric, the drug from Takeda, sells for at least $4.50 a daily pill compared with 10 cents to 50 cents for the most commonly used generic, allopurinol. St. Louis Post-Dispatch Marketing Authorization Granted by KFDA for TMX-67, Chronic ... - Jun 30, 2009 The current leading medication, allopurinol, was developed nearly 40 years ago, and a new drug that provides another option for the treatment of PharmaLive.com (press release) Circumcision a hot topic - Jun 24, 2009 I take allopurinol for gout. My healthy, 70-year-old father passed away from a stroke. Given these facts, would a daily aspirin be wise? Times Colonist Betapharm streicht Praxisaußendienst - Jun 25, 2009 Ironie der Geschichte: Betapharm gehört mit 33 Zuschlägen, darunter Allopurinol, Captopril, Enalapril und Metoprolol, zu den Gewinnern der jüngsten apotheke-adhoc SK케미칼, 통í’?Â·ê³ ë‡¨ì‚°í˜ˆì¦? ì¹˜ë£Œì œ ì‹ ì•½ '페브ë¦' êµë‚´ 승ì?¸ - Jul 1, 2009 ...못하는 ë?° 따른 ë°°ì„¤ìž¥ì• (Less-Excretor)로 êµ¬ë¶„í• ìˆ˜ 있으며, ê°?ê°? 알로푸리놀(Allopurinol)성분과 ë²¤ì¦ˆë¸Œë¡œë§ˆë¡ (Benzbromarone)성분ì?˜ 약물ì?´ 사용ë?˜ê³ 있다. YTN Savient: Kurssprung nach Zulassungsempfehlung - Jun 17, 2009 KRYSTEXXA wird bei Gichtpatienten angewendet, bei denen am Markt bereits befindliche Standardtherapeutika wie beispielsweise Allopurinol nicht anschlagen, Der Aktionär Ardea Biosciences Announces Positive Results from a Phase 1 Study ... - 20 Apr 2009 Such an agent could be combined with allopurinol in the many patients who are not achieving an adequate response. It could also be extremely useful in Earthtimes (press release) New relief for gout - Apr 9, 2009 ..."Throughout the world, allopurinol is the drug that is most widely used," says George Nuki, emeritus professor of rheumatology at the University of Nature.com (subscription) PY Lam backs Europharm resumption - Apr 14, 2009 Europharm stopped all manufacturing operations on March 6 so the Department of Health could investigate the contamination of the allopurinol tablets, News.gov.hk HK to take measures to improve pharmaceutical system - Apr 1, 2009 Meanwhile, the authority has stopped prescribing the affected drugs -- allopurinol and metformin and arranged replacements. Xinhua Pill-swap fiasco leads to prescription review - Apr 19, 2009 Last month local manufacturer Europharm had to recall its anti-gout allopurinol tablets from sale after an illegally high level of fungus was found in the The Standard Anaphylaxis: A Sudden and Deadly Progression, Part 2 - Apr 1, 2009 ..."The most common medications that cause allergic reactions are: penicillin, sulfa antibiotics, allopurinol, seizure and anti-arrhythmia medications, Massage Today Regeneron initiates enrollment in Phase III gout program - Apr 2, 2009 ...and the global Pre-Surge 2 study are each evaluating the number of gout flares per patient over the first 16 weeks of initiation of allopurinol therapy. Pharmaceutical Business Review $25 million lopped off verdict against Walgreens in fatal drug mix-up - Mar 31, 2009 ...liver failure that eventually killed him was the glipizide that he ingested after Wilmes gave it to him instead of the requested allopurinol on Jan. Chicago Daily Herald Allopurinol: Ein Enzymhemmer verhindert chronische Gichterkrankungen - Apr 16, 2009 Der Abbau der Purine zu Harnsäure kann durch den Wirkstoff Allopurinol so gesteuert und beeinflusst werden, dass das Entstehen einer chronischen Gicht Krankenkassenratgeber å¼•å…¥å¾®ç”Ÿç‰©å¸æ¸¬è©¦æ”¹å–„å¤šé …è£½è—¥æŽªæ–½æ?化藥æ¥ç?²å‡†å¾©ç”¢ - Apr 14, 2009 ...æ?åŒ–è—¥æ¥æœ‰é™?å…¬å?¸è‡ªä¸Šæœˆè¢«æ?ç™¼è£½é€ çš„åˆ¥å˜Œé†‡è—¥ä¸¸ï¼ˆAllopurinol)å?—毛霉è?Œæ±¡æŸ“ï¼Œå» æˆ¿å?œç”¢é€¾æœˆå¾Œï¼Œç¶“æ”¹å–„å¤šé …è£½è—¥æŽªæ–½ï¼Œæ˜¨çµ‚ç?²è¡›ç”Ÿç½²é•·é¦–肯,å?¯ä»¥éš¨æ™‚æ?¢å¾©ç”Ÿç”¢ã€‚ 成報 AOK schlägt weiter zu - Apr 17, 2009 Juni Arzneimittel mit Allopurinol, Captopril, Furosemid, Metoprolol und Spironolacton von Betapharm. Das zum indischen Konzern Dr. Reddy's gehörende apotheke-adhoc è—¥å‘½åŸºå› --å?ƒè—¥å‰?å?šåŸºå› 檢測é?¿å…?é?Žæ•?上身 - Mar 30, 2009 ...æŽ¥ä¸‹ä¾†ç ”ç©¶å?ˆç™¼ç?¾ï¼Œæœ?用é™?尿酸藥物異嘌呤醇(Allopurinol)會產生å?²å¸?文生強生症候群的人,51ä½?å?—測者,也全都帶有å?¦ä¸€å€‹äººé¡žç™½è¡€ç?ƒæŠ—åŽŸåŸºå› åž‹HLA-B*5801。 大愛新聞 Home Story 15/09 - Apr 8, 2009 »Wirkstoff des Monats ist Allopurinol: Ein Enzymhemmer verhindert chronische Gichterkrankungen.« »Bundesarbeitsminister Olaf Scholz hat bei seinem Besuch Jungle World Auch eine Psoriasis-Arthritis ist mit Komorbiditäten verbunden - Apr 8, 2009 Bei Hyperurikämie ist -wie bei Gicht - eine Therapie mit Allopurinol indiziert. Als bedeutenden PsA-Begleitfaktor hat die Rheumatologin die Fatigue genannt. Ärzte Zeitung Macao recalls all HK tainted Allopurinol pills - Mar 7, 2009 Hong Kong SAR's Department of Health has urged patients not to take Allopurinol produced by Europharm Laboratories due to its "suspected fungal Xinhua Europharm drug samples show no traces of fungus - Mar 16, 2009 Around 40000 people were given Hong Kong-made allopurinol pills. But the hospital authority said only 16425 patients had approached public hospitals and South China Morning Post (subscription) Restorative Remedies Introduces Three Natural Products to Manage ... - Mar 10, 2009 The drug most commonly prescribed for gout, allopurinol, addresses only one of the three pathways. Allopurinol inhibits the action of the enzyme xanthine MSNBC ULORIC(R) (febuxostat) 40-mg and 80-mg Tablets Now Available for ... - Mar 12, 2009 The largest, pivotal, phase 3 clinical trial, CONFIRMS, demonstrated that ULORIC 80 mg was superior to ULORIC 40 mg and allopurinol 300/200 mg (67 percent, PR Newswire (press release) Preventing Gout Attacks: Know Treatment Options Like Uloric ... - Feb 27, 2009 A doctor initially prescribed allopurinol, but Konshin stopped taking it after he developed a liver complication that caused yellowing of his eyes and skin. U.S. News & World Report Hong Kong: Mucormycosis Drug Found Contaminated - Mar 9, 2009 A DH spokesman said laboratory tests by the University of Hong Kong (HKU) on four batches of allopurinol (brand name: Purinol, registration no: HKï¼?30662) eMaxHealth.com New Drug Cleared For Gout Patients - Mar 6, 2009 In a large phase 3 clinical trial, patients with hyperuricemia and gout received febuxostat 40 mg, febuxostat 80 mg, or allopurinol 200 or 300 mg once daily Renal and Urology News Hospital Authority updates on drug replacement arrangement - Mar 11, 2009 The Hospital Authority (HA) started to arrange drug replacement for patients under medication treatment of Allopurinol 100mg since March 8 (Sunday). Media Newswire (press release) Coroner to probe woman's death - Mar 11, 2009 The hospital said she started medication including Allopurinol on February 15. Tests showed she had rhizopus - a fungal infection. News.gov.hk No growth of rhizopus found in Europharm drugs to HA - Mar 11, 2009 ...recalled allopurinol) which were supplied to the Hospital Authority (see annex) by Europharm had indicated no growth of rhizpous so far in the products. Media Newswire (press release) Victim's wife slams hospitals - Mar 10, 2009 The wife of a leukaemia patient who died of a fungal infection linked to the tainted drug allopurinol complained yesterday that two public hospitals had South China Morning Post (subscription) Relief for gout patients - Feb 21, 2009 For over 40 years, allopurinol was one of the few daily medications available for chronic gout sufferers. Now, gout patients have another option. Examiner.com Mixed reaction to continuing use of Europharm products - Mar 9, 2009 Gout patient Li Kam-wing, 50, visited Prince of Wales Hospital to swap tainted 100mg allopurinol tablets for a safer replacement under a measure launched on South China Morning Post (subscription) HOW SYSTEMIC ENZYMES WORK TO CURE DISEASES - Mar 16, 2009 14 chemotherapy drugs, sulfa, penicillin, furadantin, hydralazine, aprèsaline, gold, chlorpropamide, allopurinol, hydrochlorthiazide, and dilantin). NewsWithViews.com Medicines Almost Always Control Gout - Mar 11, 2009 Zyloprim (allopurinol) turns off the production of uric acid and prevents gout attacks. Benemid (probenecid) facilitates the excretion of uric acid into the Payson Roundup Cops raid drug firm - Mar 12, 2009 Tam compared Marching with Europharm, the Tai Po drug company responsible for the fungal-tainted gout medicine allopurinol, which has been linked to the The Standard Dr. Paul Donohue - Mar 3, 2009 Zyloprim (allopurinol) and Benemid (probenecid) prevent attacks. Zyloprim decreases uric acid production, and Benemid enhances its excretion by the kidneys. DetNews.com Acute allergic interstitial nephritis after use of pantoprazole - Mar 4, 2009 ...can cause acute interstitial nephritis, such as phenytoin or allopurinol, and when the delay in development of the disease is months rather than weeks. CMAJ Why booze and obesity are turning us all into Henry VIII - Mar 4, 2009 THE medicine most widely prescribed against gout is allopurinol, which helps head off attacks by lowering blood levels of uric acid. The Sun Hong Kong dice fármaco Allopurinol se contaminó con hongo letal - Mar 9, 2009 Unas 40.000 personas habrÃan consumido tabletas contaminadas de Allopurinol de 100 miligramos, usado fundamentalmente para tratar la gota. Reuters América Latina 港府å?«å?œç”¨ç–‘å?«æ¯›éœ‰è?ŒAllopurinol - Mar 6, 2009 ...香港衛生署呼籲民眾å?œç”¨æ?化藥æ¥ç”Ÿç”¢çš„"別嘌醇"(Allopurinol),懷疑å?—到污染å?«æ¯›éœ‰çœŸè?Œã€‚ 醫院管ç?†å±€è?¯ç¶²æœ?務總監張å?‰éºŸ6日說,局方有使用這種治療痛風症的藥物,高å?± 亞洲時報在線 Serviços de Saúde suspendem venda de Allopurinol - Mar 9, 2009 Apesar dos quatro lotes de Allopurinol contaminados com um fungo mortal não terem sido enviados para Macau, os Serviços de Saúde decidiram retirar o Hoje Macau é†«ç®¡å±€å‘¨å…æ—¥æ?›è—¥æœ?務安排 - Mar 13, 2009 ...病人請攜å?Œèº«ä»½è‰æˆ–副本å?Šæ¨™ç±¤è‘—「é™?尿酸藥ã€?(ALLOPURINOL TABLET 100MG)å—眼的藥袋到15間指定公立醫院的藥房辦ç?†æ?›è—¥ï¼Œä¸Šè¿°å®‰æŽ’æ¯‹é ˆä»»ä½•é ?約或見醫生。 香港新浪網 醫管局已為四å?ƒå¤šäººæ?›è—¥ - Mar 8, 2009 ...病人請攜å?Œèº«ä»½è‰æˆ–副本å?Šæ¨™ç±¤î‹¥ã€Œé™?尿酸藥ã€?(ALLOPURINOL TABLET 100MG)å—眼的藥袋到å??五間指定公立醫院的藥房辦ç?†æ?›è—¥ï¼Œä¸Šè¿°å®‰æŽ’ç„¡é ˆä»»ä½•é ?約或見醫生。 香港新浪網 í™?콩, '곰팡ì?´ê· ' ê°?ì—¼ ì?˜ì•½í’ˆ 복용 5명 사ë§? - Mar 9, 2009 ...í™?콩 보건당êµì—? ì?˜í•˜ë©´ 약 4만명 가량ì?´ 통í’?질환 치료를 위해 오염ë?œ 알로푸린올(Allopurinol) 100mgì?„ 복용한 것으로 ì¶”ì •ë?˜ê³ 있는 가운ë?° 조사 ê²°ê³¼ ì œì¡°ê³¼ì •ì¤‘ Medical Today 医管局为病人æ?¢é™?å°¿é…¸è?¯ - Mar 8, 2009 ...病人须æ?ºå?Œèº«ä»½è¯?或副本,以å?Šæ ‡ç¾ã€Œé™?å°¿é…¸è?¯ã€?(ALLOPURINOL TABLET 100M G)å—眼的è?¯è¢‹ï¼Œå‘¨ä¸€è‡³äº”上å?ˆ9时至下å?ˆ7时,到15间指定公立医院的è?¯æˆ¿åŠžç?†æ?¢è?¯ã€‚ 香港政府新闻网 "Irgendwann beginnt die Geschichte" - Mar 11, 2009 ...dass zukünftige große Studien den vorbeugenden Schutz von Nieren und Herz durch Harnsäuresenker wie beispielsweise Allopurinol beweisen werden. derStandard.at Metodologias para infecciones humanas por Leishmaniasisâ€? - Feb 23, 2009 ...con canes cuando hay tenencia responsable (uso de collar, pipetas repelentes, medicación con allopurinol y consulta periódica con el veterinario). Momarandu.com Brand Names/Synonyms: Allopurinol is also known by the following brand names and/or synonyms7HP; AL-100; Adenock; Ailural; Allo-Puren; Allopur; Allopurinol; Allopurinol Sodium; Allopurinolum [Inn-Latin]; Allozym; Allural; Aloprim; Alopurinol [Inn-Spanish]; Aloral; Alositol; Aluline; Anoprolin; Anzief; Apo-Allopurinol; Apulonga; Apurin; Apurol; Atisuril; BW 56158; Bleminol; Bloxanth; Caplenal; Cellidrin; Cosuric; Dabrosin; Dabroson; Dura Al; Embarin; Epidropal; Epuric; Foligan; Geapur; Gichtex; Gotax; HPP; Hamarin; Hexanuret; Ketanrift; Ketobun-A; Ledopur; Lopurin; Lysuron; Milurit; Miniplanor; Monarch; NSC-1390; Nektrohan; Progout; Purinol; Remid; Riball; Sigapurol; Suspendol; Takanarumin; Urbol; Uricemil; Uriprim; Uripurinol; Uritas; Urobenyl; Urolit; Urosin; Urtias; Urtias 100; Xanturat; Zyloprim; Zyloric Drug Category: Allopurinol is categorized under the following by the FDA: Free Radical Scavengers; Enzyme Inhibitors Antimetabolites; Gout Suppressants; ATC:M04AA01 Dosage Forms: 100, 200 and 300mg tablet, injection Absorption: approximately 90% absorbed from the gastrointestinal tract Interactions: Interactions for Allopurinol: The following drug interactions were observed in some patients undergoing treatment with oral allopurinol. Although the pattern of use for oral allopurinol includes longer term therapy, particularly for gout and renal calculi, the experience gained may be relevant. Mercaptopurine/Azathioprine: Allopurinol inhibits the enzymatic oxidation of mercaptopurine and azathioprine to 6-thiouric acid. This oxidation, which is catalyzed by xanthine oxidase, inactivates mercaptopurine. In patients receiving mercaptopurine (Purinethol) or azathioprine (Imuran), the concomitant administration of 300-600 mg of allopurinol per day will require a reduction in dose to approximately one-third to one-fourth of the usual dose of mercaptopurine or azathioprine. Subsequent adjustment of doses of mercaptopurine or azathioprine should be made on the basis of therapeutic response and the appearance of toxic effects. Dicumarol: It has been reported that allopurinol prolongs the half-life of the anticoagulant, dicumarol. The clinical basis of this drug interaction has not been established but should be noted when allopurinol is given to patients already on dicumarol therapy. Consequently, prothrombin time should be reassessed periodically in patients receiving both drugs. Uricosuric Agents: Since the excretion of oxipurinol is similar to that of urate, uricosuric agents, which increase the excretion of urate, are also likely to increase the excretion of oxipurinol and thus lower the degree of inhibition of xanthine oxidase. The concomitant administration of uricosuric agents and allopurinol has been associated with a decrease in the excretion of oxypurines (hypoxanthine and xanthine) and an increase in urinary uric acid excretion compared with that observed with allopurinol alone. Although clinical evidence to date has not demonstrated renal precipitation of oxypurines in patients either on allopurinol alone or in combination with uricosuric agents, the possibility should be kept in mind. Thiazide Diuretics: The reports that the concomitant use of allopurinol and thiazide diuretics may contribute to the enhancement of allopurinol toxicity in some patients have been reviewed in an attempt to establish a cause-and-effect relationship and a mechanism of causation. Review of these case reports indicates that the patients were mainly receiving thiazide diuretics for hypertension and that tests to rule out decreased renal function secondary to hypertensive nephropathy were not often performed. In those patients in whom renal insufficiency was documented, however, the recommendation to lower the dose of allopurinol was not followed. Although a causal mechanism and a cause-and-effect relationship have not been established, current evidence suggests that renal function should be monitored in patients on thiazide diuretics and allopurinol even in the absence of renal failure, and dosage levels should be even more conservatively adjusted in those patients on such combined therapy if diminished renal function is detected.. Ampicillin/Amoxicillin: An increase in the frequency of skin rash has been reported among patients receiving ampicillin or amoxicillin concurrently with allopurinol compared to patients who are not receiving both drugs. The cause of the reported association has not been established. Cytotoxic Agents: Enhanced bone marrow suppression by cyclophosphamide and other cytotoxic agents has been reported among patients with neoplastic disease, except leukemia, in the presence of allopurinol. However, in a well-controlled study of patients with lymphoma on combination therapy, allopurinol did not increase the marrow toxicity of patients treated with cyclophosphamide, doxorubicin, bleomycin, procarbazine and/or mechlorethamine. Chlorpropamide: Chlorpropamide's plasma half-life may be prolonged by allopurinol, since allopurinol and chlorpropamide may compete for excretion in the renal tubule. The risk of hypoglycemia secondary to this mechanism may be increased if allopurinol and chlorpropamide are given concomitantly in the presence of renal insufficiency. Cyclosporin: Reports indicate that cyclosporine levels may be increased during concomitant treatment with allopurinol sodium for injection. Monitoring of cyclosporine levels and possible adjustment of cyclosporine dosage should be considered when these drugs are co-administered. Tolbutamide's conversion to inactive metabolites has been shown to be catalyzed by xanthine oxidase from rat liver. The clinical significance, if any, of these observations is unknown. Chemical IUPAC Name: 3,5,7,8-tetrazabicyclo[4.3.0]nona-3,5,9-trien-2-one : |
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