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Leucovorin Calcium (Leucovorin Calcium)

Trade Name : Leucovorin Calcium

Hikma Pharmaceuticals USA Inc.

INJECTION, POWDER, LYOPHILIZED, FOR SOLUTION

Strength 350 mg/17.5mL

LEUCOVORIN CALCIUM Folate Analog [EPC],Folic Acid [CS]

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GNH India is WHO GDP and ISO 9001 2015 Certified Pharmaceutical Wholesaler/ Supplier/ Exporters/ Importer from India of Leucovorin Calcium (Leucovorin Calcium) which is also known as Leucovorin Calcium and Manufactured by Hikma Pharmaceuticals USA Inc.. It is available in strength of 350 mg/17.5mL per ml. Read more

Leucovorin Calcium (Leucovorin Calcium) is supplied for Tenders/ Emergency imports/ Un - licensed, Specials, Orphan drug/ Name patient line/ RLD supplies/ Reference listed drugs/ Comparator Drug/ Bio-Similar/ Innovator samples For Clinical trials.  Click to know price.     Read less

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We deliver your medicines through a validated cold chain shipment process. This process is used as these medicines need to manufactured, transported and stored at very specific temperatures, utilizing thermal and refrigerated packaging methods.

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We deliver your medicines through a validated cold chain shipment process. This process is used as these medicines need to manufactured, transported and stored at very specific temperatures, utilizing thermal and refrigerated packaging methods.

We deliver your medicines through a validated cold chain shipment process. This process is used as these medicines need to manufactured, transported and stored at very specific temperatures, utilizing thermal and refrigerated packaging methods.

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  • No data
  • Rx Only
  • Leucovorin is one of several active, chemically reduced derivatives of folic acid. It is useful as an antidote to drugs which act as folic acid antagonists.
  • Also known as folinic acid, Citrovorum factor, or 5-formyl-5,6,7,8-tetrahydrofolic acid, this compound has the chemical designation of Calcium -[p-[[[(6)-2-amino-5-formyl-5,6,7,8-tetrahydro-4-hydroxy-6-pteridinyl]methyl]amino]benzoyl]-L-glutamate (1:1). The structural formula of leucovorin calcium is:
  • CHCaNO u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0u00a0M.W.=511.51
  • Leucovorin Calcium for Injection is a sterile product indicated for intramuscular (IM) or intravenous (IV) administration and is supplied in 50 mg, 100 mg, 200 mg, and 350 mg vials.
  • Each 50 mg vial of Leucovorin Calcium for Injection, when reconstituted with 5 mL of sterile diluent, contains leucovorin (as the calcium salt) 10 mg/mL.
  • Each 100 mg vial of Leucovorin Calcium for Injection, when reconstituted with 10 mL of sterile diluent, contains leucovorin (as the calcium salt) 10 mg/mL.
  • Each 200 mg vial of Leucovorin Calcium for Injection, when reconstituted with 20 mL of sterile diluent, contains leucovorin (as the calcium salt) 10 mg/mL.
  • Each 350 mg vial of Leucovorin Calcium for Injection, when reconstituted with 17.5 mL of sterile diluent, contains leucovorin (as the calcium salt) 20 mg/mL.
  • In each dosage form, one milligram of leucovorin calcium contains 0.002 mmol of leucovorin and 0.002 mmol of calcium.
  • These lyophilized products contain no preservative. The inactive ingredient is Sodium Chloride, added to adjust tonicity. Sodium hydroxide and/or hydrochloric acid may be added for pH adjustment. pH adjusted to 7.0 to 8.5. Reconstitute with Bacteriostatic Water for Injection, which contains benzyl alcohol (see section), or with Sterile Water for Injection.
  • Leucovorin is a mixture of the diastereoisomers of the 5-formyl derivative of tetrahydrofolic acid (THF). The biologically active compound of the mixture is the (-)--isomer, known as Citrovorum factor or (-)-folinic acid. Leucovorin does not require reduction by the enzyme dihydrofolate reductase in order to participate in reactions utilizing folates as a source of u201cone-carbonu201d moieties. -Leucovorin (-5-formyltetrahydrofolate) is rapidly metabolized (via 5, 10-methenyltetrahydrofolate then 5, 10-methylenetetrahydrofolate) to ,5-methyltetrahydrofolate. ,5-Methyltetrahydrofolate can in turn be metabolized via other pathways back to 5,10- methylenetetrahydrofolate, which is converted to 5-methyltetrahydrofolate by an irreversible, enzyme catalyzed reduction using the cofactors FADH and NADPH.
  • Administration of leucovorin can counteract the therapeutic and toxic effects of folic acid antagonists such as methotrexate, which act by inhibiting dihydrofolate reductase.
  • In contrast, leucovorin can enhance the therapeutic and toxic effects of fluoropyrimidines used in cancer therapy, such as 5-fluorouracil. Concurrent administration of leucovorin does not appear to alter the plasma pharmacokinetics of 5-fluorouracil. 5-Fluorouracil is metabolized to fluorodeoxyuridylic acid, which binds to and inhibits the enzyme thymidylate synthase (an enzyme important in DNA repair and replication).
  • Leucovorin is readily converted to another reduced folate, 5,10-methylenetetrahydrofolate, which acts to stabilize the binding of fluorodeoxyridylic acid to thymidylate synthase and thereby enhances the inhibition of this enzyme.
  • The pharmacokinetics after intravenous, intramuscular and oral administration of a 25 mg dose of leucovorin were studied in male volunteers. After intravenous administration, serum total reduced folates (as measured by assay) reached a mean peak of 1259 ng/mL (range 897 to 1625). The mean time to peak was 10 minutes. This initial rise in total reduced folates was primarily due to the parent compound 5-formyl-THF (measured by assay) which rose to 1206 ng/mL at 10 minutes. A sharp drop in parent compound followed and coincided with the appearance of the active metabolite 5-methyl-THF which became the predominant circulating form of the drug.
  • The mean peak of 5-methyl-THF was 258 ng/mL and occurred at 1.3 hours. The terminal half-life for total reduced folates was 6.2 hours. The area under the concentration versus time curves (AUCs) for -leucovorin, -leucovorin and 5-methyltetrahydrofolate were 28.4 u00b1 3.5, 956 u00b1 97 and 129 u00b1 12 (mg/min/L u00b1 S.E.). When a higher dose of ,-leucovorin (200 mg/m) was used, similar results were obtained. The d-isomer persisted in plasma at concentrations greatly exceeding those of the -isomer.
  • After intramuscular injection, the mean peak of serum total reduced folates was 436 ng/mL (range 240 to 725) and occurred at 52 minutes. Similar to IV administration, the initial sharp rise was due to the parent compound. The mean peak of 5-formyl-THF was 360 ng/mL and occurred at 28 minutes. The level of the metabolite 5-methyl-THF increased subsequently over time until at 1.5 hours it represented 50% of the circulating total folates. The mean peak of 5-methyl-THF was 226 ng/mL at 2.8 hours. The terminal half-life of total reduced folates was 6.2 hours. There was no difference of statistical significance between IM and IV administration in the AUC for total reduced folates, 5-formyl-THF, or 5-methyl-THF.
  • After oral administration of leucovorin reconstituted with aromatic elixir, the mean peak concentration of serum total reduced folates was 393 ng/mL (range 160 to 550). The mean time to peak was 2.3 hours and the terminal half-life was 5.7 hours. The major component was the metabolite 5-methyltetrahydrofolate to which leucovorin is primarily converted in the intestinal mucosa. The mean peak of 5-methyl-THF was 367 ng/mL at 2.4 hours. The peak level of the parent compound was 51 ng/mL at 1.2 hours. The AUC of total reduced folates after oral administration of the 25 mg dose was 92% of the AUC after intravenous administration.
  • Following oral administration, leucovorin is rapidly absorbed and expands the serum pool of reduced folates. At a dose of 25 mg, almost 100% of the -isomer but only 20% of the -isomer is absorbed. Oral absorption of leucovorin is saturable at doses above 25 mg. The apparent bioavailability of leucovorin was 97% for 25 mg, 75% for 50 mg, and 37% for 100 mg.
  • In a randomized clinical study conducted by the Mayo Clinic and the North Central Cancer Treatment Group (Mayo/NCCTG) in patients with advanced metastatic colorectal cancer three treatment regimens were compared: Leucovorin (LV) 200 mg/m and 5-fluorouracil (5-FU) 370 mg/m versus LV 20 mg/m and 5-FU 425 mg/m versus 5-FU 500 mg/m. All drugs were administered by slow intravenous infusion daily for 5 days repeated every 28 to 35 days. Response rates were 26% (p=0.04 versus 5-FU alone), 43% (p=0.001 versus 5-FU alone) and 10% for the high dose leucovorin, low dose leucovorin and 5-FU alone groups respectively. Respective median survival times were 12.2 months (p=0.037), 12 months (p=0.050), and 7.7 months. The low dose LV regimen gave a statistically significant improvement in weight gain of more than 5%, relief of symptoms, and improvement in performance status. The high dose LV regimen gave a statistically significant improvement in performance status and trended toward improvement in weight gain and in relief of symptoms but these were not statistically significant.u00a0
  • In a second Mayo/NCCTG randomized clinical study the 5-FU alone arm was replaced by a regimen of sequentially administered methotrexate (MTX), 5-FU, and LV. Response rates with LV 200 mg/m and 5-FU 370 mg/m versus LV 20 mg/m and 5-FU 425 mg/m versus sequential MTX and 5-FU and LV were respectively 31% (p=<0.01), 42% (p=<0.01), and 14%. Respective median survival times were 12.7 months (p=<0.04), 12.7 months (p=<0.01), and 8.4 months. No statistically significant difference in weight gain of more than 5% or in improvement in performance status was seen between the treatment arms.u00a0
  • The pharmacokinetics of 200 mg doses of leucovorin administered intravenously and orally (reconstituted powder, not tablets) have been evaluated in healthy male subjects. The serum clearance corrected for bioavailability, terminal half-life, and apparent volume of distribution of total folate were not significantly different between routes of administration. The oral bioavailability of the 200 mg dose was 31%. Eighty-three percent of the biologically active IV dose was recovered in the urine within 24 hours, 31% as 5-methyltetrahydrofolate. Twenty percent of the same oral dose was excreted in 24 hours, 16% as 5-methyltetrahydrofolate.
  • Leucovorin calcium rescue is indicated after high dose methotrexate therapy in osteosarcoma. Leucovorin calcium is also indicated to diminish the toxicity and counteract the effects of impaired methotrexate elimination and of inadvertent overdosages of folic acid antagonists.
  • Leucovorin calcium is indicated in the treatment of megaloblastic anemias due to folic acid deficiency when oral therapy is not feasible.
  • Leucovorin is also indicated for use in combination with 5-fluorouracil to prolong survival in the palliative treatment of patients with advanced colorectal cancer. Leucovorin should not be mixed in the same infusion as 5-fluorouracil because a precipitate may form.
  • Leucovorin is improper therapy for pernicious anemia and other megaloblastic anemias secondary to the lack of vitamin B. A hematologic remission may occur while neurologic manifestations continue to progress.
  • In the treatment of accidental overdosages of folic acid antagonists, intravenous leucovorin should be administered as promptly as possible. As the time interval between antifolate administration (e.g., methotrexate) and leucovorin rescue increases, leucovorin's effectiveness in counteracting toxicity decreases. In the treatment of accidental overdosages of intrathecally adminstered folic acid antagonists, do not adminster leucovorin intrathecally. LEUCOVORIN MAY BE HARMFUL OR FATAL IF GIVEN INTRATHECALLY.
  • Monitoring of the serum methotrexate concentration is essential in determining the optimal dose and duration of treatment with leucovorin.
  • Delayed methotrexate excretion may be caused by a third space fluid accumulation (i.e., ascites, pleural effusion), renal insufficiency, or inadequate hydration. Under such circumstances, higher doses of leucovorin or prolonged administration may be indicated. Doses higher than those recommended for oral use must be given intravenously.
  • Because of the benzyl alcohol contained in certain diluents used for reconstituting Leucovorin Calcium for Injection, when doses greater than 10 mg/m are administered, Leucovorin Calcium for Injection should be reconstituted with Sterile Water for Injection, USP, and used immediately (see ).
  • Because of the calcium content of the leucovorin solution, no more than 160 mg of leucovorin should be injected intravenously per minute (16 mL of a 10 mg/mL, or 8 mL of a 20 mg/mL solution per minute).
  • Leucovorin enhances the toxicity of 5-fluorouracil. When these drugs are administered concurrently in the palliative therapy of advanced colorectal cancer, the dosage of 5-fluorouracil must be lower than usually administered. Although the toxicities observed in patients treated with the combination of leucovorin plus 5-fluorouracil are qualitatively similar to those observed in patients treated with 5-fluorouracil alone, gastrointestinal toxicities (particularly stomatitis and diarrhea) are observed more commonly and may be more severe and of prolonged duration in patients treated with the combination.
  • In the first Mayo/NCCTG controlled trial, toxicity, primarily gastrointestinal, resulted in 7% of patients requiring hospitalization when treated with 5-fluorouracil alone or 5-fluorouracil in combination with 200 mg/m of leucovorin and 20% when treated with 5-fluorouracil in combination with 20 mg/m of leucovorin. In the second Mayo/NCCTG trial, hospitalizations related to treatment toxicity also appeared to occur more often in patients treated with the low dose leucovorin/5-fluorouracil combination than in patients treated with the high dose combination u2014 11% versus 3%. Therapy with leucovorin and 5-fluorouracil must not be initiated or continued in patients who have symptoms of gastrointestinal toxicity of any severity, until those symptoms have completely resolved. Patients with diarrhea must be monitored with particular care until the diarrhea has resolved, as rapid clinical deterioration leading to death can occur. In an additional study utilizing higher weekly doses of 5-fluorouracil and leucovorin, elderly and/or debilitated patients were found to be at greater risk for severe gastrointestinal toxicity.u00a0
  • Seizures and/or syncope have been reported rarely in cancer patients receiving leucovorin, usually in association with fluoropyrimidine administration, and most commonly in those with CNS metastases or other predisposing factors, however, a causal relationship has not been established.u00a0
  • The concomitant use of leucovorin with trimethoprim-sulfamethoxazole for the acute treatment of Pneumocystis carinii pneumonia in patients with HIV infection was associated with increased rates of treatment failure and morbidity in a placebo-controlled study.
  • No data
  • Allergic sensitization, including anaphylactoid reactions and urticaria, has been reported following the administration of both oral and parenteral leucovorin. No other adverse reactions have been attributed to the use of leucovorin .
  • The following table summarizes significant adverse events occurring in 316 patients treated with the leucovorin/5-fluorouracil combinations compared against 70 patients treated with 5-fluorouracil alone for advanced colorectal carcinoma. These data are taken from the Mayo/NCCTG large multicenter prospective trial evaluating the efficacy and safety of the combination regimen.
  • Excessive amounts of leucovorin may nullify the chemotherapeutic effect of folic acid antagonists.
  • No data
  • Leucovorin Calcium for Injection is supplied in sterile, single use vials as follows:
  • NDC 0143-9555-01u00a0u00a0u00a0u00a0u00a0u00a0
  • NDC 0143-9554-01u00a0u00a0u00a0u00a0u00a0u00a0
  • NDC 0143-9553-01u00a0u00a0u00a0u00a0u00a0u00a0
  • NDC 0143-9552-01u00a0u00a0u00a0u00a0u00a0u00a0
  • Store at 20u00b0 to 25u00b0C (68u00b0 to 77u00b0F) [See USP Controlled Room Temperature]. Retain in carton until time of use.
  • To report SUSPECTED ADVERSE REACTIONS, contact West-Ward Pharmaceutical Corp. at 1-877-845-0689, or the FDA at 1-800-FDA-1088 or .
  • For Product Inquiry call 1-877-845-0689.
  • Manufactured by:
  • HIKMA FARMACu00caUTICA (PORTUGAL), S.A.
  • Estrada do Rio da Mu00f3, 8, 8A e 8B u2013 Fervenu00e7a u2013 2705-906 Terrugem SNT, PORTUGAL
  • Distributed by:
  • West-Ward Pharmaceuticals
  • Eatontown, NJ 07724 USA
  • Revised July 2015
  • PIN404-WES/1
  • u00a0n
  • NDC 0143-9555-01
  • Rx only
  • Leucovorin Calcium for Injection
  • 50 mg/vial
  • For INTRAVENOUS or INTRAMUSCULAR Use
  • LYOPHILIZED
  • u00a0u00a0
  • NDC 0143-9554-01
  • Rx only
  • Leucovorin Calcium for Injection
  • 100 mg/vial
  • For INTRAVENOUS or INTRAMUSCULAR Use
  • LYOPHILIZED
  • u00a0u00a0
  • NDC 0143-9553-01
  • Rx only
  • Leucovorin Calcium for Injection
  • 200u00a0mg/vial
  • For INTRAVENOUS or INTRAMUSCULAR Use
  • LYOPHILIZED
  • NDC 0143-9552-01
  • Rx only
  • Leucovorin Calcium for Injection
  • 350 mg/vial
  • For INTRAVENOUS or INTRAMUSCULAR Use
  • LYOPHILIZED
  • NDC 0143-9555-01
  • Rx only
  • Leucovorin Calcium for Injection
  • 50 mg/vial
  • For INTRAVENOUS or INTRAMUSCULAR Use
  • LYOPHILIZED
  • NDC 0143-9554-01
  • Rx only
  • Leucovorin Calcium for Injection
  • 100 mg/vial
  • For INTRAVENOUS or INTRAMUSCULAR Use
  • LYOPHILIZED
  • NDC 0143-9553-01
  • Rx only
  • Leucovorin Calcium for Injection
  • 200u00a0mg/vial
  • For INTRAVENOUS or INTRAMUSCULAR Use
  • LYOPHILIZED
  • NDC 0143-9552-01
  • Rx only
  • Leucovorin Calcium for Injection
  • 350 mg/vial
  • For INTRAVENOUS or INTRAMUSCULAR Use
  • LYOPHILIZED
  • No data

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