Drug lookup
Drug reference

Daclizumab

Monoclonal Antibody · Immunosuppressant

Also known as ZENAPAX

Monoclonal AntibodyImmunosuppressant
CDSCO approvedSchedule H
EXCRETION
not curated
INTERACTIONS
none in our sources
PREGNANCY
not curated

Mechanism

Daclizumab is a humanized monoclonal antibody that binds to the CD25 subunit of the interleukin-2 receptor (IL-2R) on the surface of activated, but not resting, T cells. This binding blocks IL-2-mediated T-cell activation, targeting growth-factor pathways. The mechanism limits clonal expansion of T cells and potentially promotes immune tolerance, resulting in a relative decrease of the expression of the α chain of the IL-2 receptor.

Indications

Organ transplantationAutoimmune diseaseAcute immune rejection of organ transplantsPrevention of transplant rejectioninduction therapy in solid-organ transplantationms (second-line)prophylaxis of acute organ transplant rejection

Dosing

Adult
is a low dose of an ICS, although a leukotriene receptor antagonist may be used as an alternative. An important caveat for patients with mild asthma is that although the risk of a severe, life­threatening attack is low, it is not zero.…

Pharmacokinetics

Half-life
20 days

Side effects

Common
good safety profile
Serious
  • anaphylactic reactions
  • rare lymphoproliferative disorders
  • opportunistic infections
  • beta adrenergic blocking effects (worsening of heart failure and bronchospasm)

Related guidelines

Other Monoclonal Antibody drugs

Ask House about Daclizumab

Continue into a citation-backed clinical answer with the drug context already attached.

Sources: KD Tripathi 7e, Goodman & Gilman 14e, Katzung·Verified: 2026-05-13 · House clinical team