GNH USA

Europe — EMA

Immutrex

GNH USA supplies Immutrex (Methotrexate), a disease‑modifying antirheumatic drug for rheumatoid arthritis, psoriatic arthritis and certain cancers.

Methotrexate

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What is Methotrexate?

Methotrexate, the active ingredient in Immutrex, is an antimetabolite presented as an injection solution for subcutaneous use. It treats rheumatoid arthritis, psoriatic arthritis, severe plaque psoriasis, and certain malignancies such as acute lymphoblastic leukemia and non‑Hodgkin lymphoma. GNH USA supplies Immutrex as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

What is Methotrexate used for?

Methotrexate is a disease‑modifying antirheumatic drug (DMARD) that modulates immune and proliferative pathways.

Rheumatoid arthritis: reduces joint inflammation and slows structural damage. Psoriatic arthritis: improves skin lesions and joint symptoms. Severe plaque psoriasis: decreases plaque thickness and scaling. Acute lymphoblastic leukemia: interferes with malignant cell proliferation. Non‑Hodgkin lymphoma: contributes to disease control.

What are the side effects of Methotrexate?

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

Common Side Effects: - Nausea: mild gastrointestinal upset. - Fatigue: transient tiredness. - Oral ulcers: painful sores in the mouth. - Elevated liver enzymes: mild hepatic changes.

Serious or Rare Side Effects: - Bone marrow suppression: risk of pancytopenia. - Severe hepatic toxicity: potential fibrosis or cirrhosis. - Pulmonary toxicity: interstitial pneumonitis or fibrosis.

What precautions apply to Methotrexate?

Before initiating therapy, clinicians should assess baseline organ function and counsel patients on risks.

Monitor liver function: perform baseline and periodic LFTs. Assess renal function: adjust dosing if impairment is present. Avoid in pregnancy: methotrexate is teratogenic and contraindicated. Use contraception: effective methods required for both sexes during treatment and for several months after. Screen for infections: evaluate for latent TB, hepatitis, and other chronic infections. Store at 2-8°C: keep refrigerated, protect from light, do not freeze or shake.

What does Methotrexate interact with?

Methotrexate interacts with several drug classes that can alter its safety profile.

Major Interactions (Avoid): - NSAIDs: increase methotrexate toxicity. - Live vaccines: heightened risk of severe infection. - Trimethoprim‑sulfamethoxazole: potentiates bone‑marrow suppression.

Moderate Interactions (Monitor Closely): - Proton pump inhibitors: may affect absorption and renal clearance. - Azathioprine: additive immunosuppressive effect increasing infection risk.

Frequently asked questions

What conditions is Immutrex used to treat?+
Immutrex, containing methotrexate, is indicated for rheumatoid arthritis, psoriatic arthritis, severe plaque psoriasis, acute lymphoblastic leukemia and non‑Hodgkin lymphoma. In each case the drug works to reduce inflammation, limit disease progression, or inhibit malignant cell growth as part of a prescribed therapeutic regimen.
How does methotrexate work?+
Methotrexate blocks dihydrofolate reductase, reducing tetrahydrofolate levels needed for DNA synthesis. This limits the proliferation of rapidly dividing cells, including immune cells that drive inflammation and cancer cells. Additionally, methotrexate increases extracellular adenosine, which has anti‑inflammatory properties that help control autoimmune disease activity.
What determines the dose of Immutrex?+
The exact dose of Immutrex is set by the prescribing clinician based on the specific indication, patient weight, renal and hepatic function, and response to therapy. Dosing may be adjusted over time to balance efficacy with safety, and patients should follow the individualized regimen provided by their healthcare professional.
Is Immutrex safe during pregnancy or breastfeeding?+
Methotrexate is classified as Pregnancy Category X, meaning it is contraindicated in pregnancy due to a high risk of fetal malformations and miscarriage. It is also not recommended while breastfeeding because it can be excreted in breast milk and may harm the infant. Effective contraception is required for both men and women during treatment and for several months after discontinuation.
How do I order Immutrex from GNH USA?+
To request Immutrex, 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 logistics if needed) and the necessary import documentation.
How does Immutrex compare with other DMARDs or biologic therapies?+
Immutrex (methotrexate) is a conventional synthetic DMARD that is often used as first‑line therapy because of its broad efficacy, extensive clinical experience, and lower cost compared with biologic agents. Biologics target specific cytokines or cells and may be added when methotrexate alone does not achieve disease control, but they generally require injection or infusion and have distinct safety profiles.
What are the storage and handling requirements for Immutrex?+
Immutrex should be stored refrigerated at 2‑8 °C. Keep the vial in its original packaging, protect it from light, and avoid freezing or shaking the solution. If temporary storage at room temperature is unavoidable, limit exposure to no more than 24 hours and return the product to refrigeration promptly.
How is Immutrex administered?+
Immutrex is supplied as a sterile injection solution for subcutaneous administration. A healthcare professional injects the prescribed dose into the subcutaneous tissue, typically in the abdomen or thigh, using aseptic technique. Patients may be taught self‑injection after appropriate training, but the initial administration is usually performed by a qualified provider.
What are the most serious risks to watch for while using Immutrex?+
The most serious adverse events include bone‑marrow suppression leading to pancytopenia, severe hepatic toxicity such as fibrosis or cirrhosis, and pulmonary toxicity manifesting as interstitial pneumonitis. Early detection through regular blood tests, liver function monitoring, and assessment of respiratory symptoms is essential to mitigate these risks.
Who should not use Immutrex?+
Immutrex is contraindicated in individuals who are pregnant, planning pregnancy, or breastfeeding. It should also be avoided in patients with severe renal impairment, active liver disease, uncontrolled infections, or known hypersensitivity to methotrexate or any component of the formulation. Clinicians must evaluate each patient’s medical history before initiating therapy.
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
S.F. Group Srl
Origin
EU

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