Cyclosporine is an immunosuppressant used to prevent rejection after organ transplants (kidney, liver, heart) and to treat immune-mediated conditions such as severe rheumatoid arthritis, psoriasis, and nephrotic syndrome. Topical ophthalmic cyclosporine treats chronic dry eye. It reduces immune activity to control inflammation and prevent immune attacks on transplanted organs and affected tissues.

Cyclosporine is neither a steroid nor an antibiotic. It’s an immunosuppressant—specifically a calcineurin inhibitor—that reduces T‑cell activation by blocking calcineurin and lowering interleukin‑2 production. It’s used to prevent transplant rejection and treat certain autoimmune conditions. Common concerns include kidney toxicity, high blood pressure, tremors and increased infection risk, so monitoring is required.

Cyclosporine is often avoided because it can cause serious side effects: kidney damage and high blood pressure, increased susceptibility to infections and certain cancers, neurotoxicity, gum overgrowth and excessive hair growth. It has many drug interactions and a narrow therapeutic window requiring frequent blood-level and kidney-function monitoring. People with uncontrolled hypertension, existing kidney impairment, active infections or pregnancy are usually advised to avoid it unless benefits outweigh risks.

Contraindications for cyclosporine include known hypersensitivity to the drug, uncontrolled hypertension, significant renal impairment or active renal dysfunction, and active serious infections. Use is also contraindicated with concurrent administration of live vaccines and in patients with active malignancy unless benefits outweigh risks. Caution or avoidance is required when combining cyclosporine with other nephrotoxic or strong CYP3A4‑interacting drugs.

Yes — cyclosporine is considered a high‑risk immunosuppressant. It has a narrow therapeutic window and can cause serious adverse effects including nephrotoxicity, hypertension, infections, and increased cancer risk. It has many drug interactions (CYP3A4) and requires regular monitoring of blood levels, kidney function, blood pressure and lipids. Use under specialist supervision with dose adjustments and infection precautions.

How long you can stay on cyclosporine depends on the condition: transplant patients often remain on maintenance therapy long-term or lifelong with close monitoring, while for skin conditions (psoriasis, severe eczema) it’s usually short-to-medium term—weeks to months, often up to 6–12 months—because of risks like kidney damage and high blood pressure. Clinicians use the lowest effective dose and frequent blood and kidney tests.