GNH USA

Europe — EMA

Injexate

GNH USA supplies Injexate (Methotrexate), a antimetabolite immunosuppressant for rheumatoid arthritis, psoriasis and certain cancers.

Methotrexate

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What is Methotrexate?

Methotrexate, the active ingredient in Injexate, is an antimetabolite (folate antagonist) presented as a sterile injectable solution for subcutaneous use. It is employed to treat rheumatoid arthritis, psoriasis, certain cancers and ectopic pregnancy in adult patients.

GNH USA supplies Injexate as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

What is Methotrexate used for?

Methotrexate acts on inflammatory and proliferative disease pathways, providing disease‑modifying effects in several conditions.

Rheumatoid arthritis: reduces joint inflammation and slows structural damage. Psoriasis: diminishes skin plaque formation and severity. Acute lymphoblastic leukemia and lymphoma: interferes with malignant cell proliferation. Ectopic pregnancy: terminates trophoblastic tissue growth.

What are the side effects of Methotrexate?

Methotrexate may cause a range of adverse reactions, from mild to severe.

Common Side Effects: - Nausea and vomiting - Fatigue or malaise - Oral mucosal ulceration (mouth sores) - Elevated liver enzymes - Mild leukopenia or thrombocytopenia

Serious or Rare Side Effects: - Severe hepatotoxicity or liver fibrosis - Pulmonary fibrosis or interstitial pneumonitis - Bone marrow failure leading to pancytopenia - Life‑threatening infections due to immunosuppression - Acute renal failure

What precautions apply to Methotrexate?

Prior to initiating therapy, clinicians should assess baseline organ function and monitor regularly.

Baseline laboratory evaluation: obtain liver function tests, renal profile and complete blood count. Pregnancy contraindication: avoid use in women of childbearing potential unless effective contraception is used. Renal impairment: adjust dose or consider alternative therapy in patients with reduced clearance. Concomitant hepatotoxic drugs: avoid or monitor closely when used together. Store at 2-8°C: keep refrigerated, protect from light, do not freeze or shake.

What does Methotrexate interact with?

Methotrexate interacts with several medicines that can alter its efficacy or toxicity.

Major Interactions (Avoid): - Non‑steroidal anti‑inflammatory drugs (NSAIDs) – increase risk of renal toxicity. - Trimethoprim‑sulfamethoxazole – potentiates myelosuppression. - Live vaccines – may cause uncontrolled infection. - Azathioprine – additive bone‑marrow suppression.

Moderate Interactions (Monitor Closely): - Phenytoin, phenobarbital, carbamazepine – may reduce methotrexate levels. - Oral contraceptives – may decrease efficacy of hormonal contraception. - Folic acid supplements – can lessen toxicity but may reduce therapeutic effect. - Proton pump inhibitors – may increase methotrexate exposure.

Frequently asked questions

What is Injexate used for?+
Injexate contains methotrexate, an immunosuppressant and disease‑modifying antirheumatic drug (DMARD). It is prescribed for rheumatoid arthritis, moderate to severe psoriasis, certain hematologic cancers such as acute lymphoblastic leukemia and lymphoma, and for medical management of ectopic pregnancy.
How does methotrexate work?+
Methotrexate blocks dihydrofolate reductase, an enzyme needed to produce tetrahydrofolate. This halts synthesis of purine and pyrimidine nucleotides, reducing DNA, RNA and protein formation. The resulting antiproliferative effect limits growth of rapidly dividing immune cells and cancer cells, while also dampening inflammatory cytokine production.
What is the usual dose of Injexate?+
The dose of Injexate is individualized by the prescribing clinician based on the specific indication, patient weight, renal and hepatic function, and treatment response. Dosage regimens can vary widely, and the prescriber determines the appropriate amount and frequency.
Is Injexate safe in pregnancy or breastfeeding?+
Methotrexate is classified as Pregnancy Category X because it is known to cause fetal malformations and embryotoxicity. It is contraindicated during pregnancy and should be stopped well before conception. Use while breastfeeding is also discouraged, as the drug can be excreted in milk and affect the infant.
How do I order Injexate from GNH USA?+
To request Injexate, submit an enquiry on the product page at gnh-usa.com, specifying the required quantity. GNH USA works with hospitals, pharmacies and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details (including cold‑chain if needed) and necessary import documentation.
How does Injexate compare with other treatments for rheumatoid arthritis?+
Injexate (methotrexate) is a conventional synthetic DMARD that is generally less expensive than biologic agents such as TNF‑α inhibitors. It can be administered subcutaneously, offering more predictable absorption than oral forms. While biologics target specific cytokines, methotrexate provides broad immunosuppression and is often used as first‑line therapy.
What are the storage and handling requirements for Injexate?+
Injexate should be stored at 2‑8 °C in a refrigerator. Keep the vial in its original packaging, protect it from light, and avoid freezing or shaking the solution. Do not use the product if it has been exposed to temperatures outside the recommended range.
How is Injexate administered?+
Injexate is given by subcutaneous injection, typically into the abdomen or thigh. The injection should be performed using aseptic technique with a suitable needle, and the site should be rotated to minimize local irritation. Administration is usually performed by a healthcare professional or a trained patient.
What are the most serious risks associated with Injexate?+
The most critical adverse events include severe liver toxicity, bone‑marrow suppression leading to pancytopenia, and pulmonary fibrosis or interstitial pneumonitis. Patients should be monitored regularly for liver enzymes, blood counts and respiratory symptoms, and the drug should be discontinued if serious toxicity is identified.
Who should not use Injexate?+
Injexate is contraindicated in pregnant women, individuals with known hypersensitivity to methotrexate, patients with severe hepatic disease, significant renal impairment, or existing bone‑marrow failure. Caution is also advised for patients with active infections or immunodeficiency.
Information provided on this page is for educational use by procurement and clinical professionals. Always consult a licensed healthcare provider for medical advice and prescribing decisions. GNH USA supplies this product subject to applicable regulatory and licensing requirements.
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Product details

Drug
Methotrexate
Route
Subcutaneous Use
Manufacturer
Accord Healthcare B.V.
Origin
EU

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