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Desmopressin

Synthetic vasopressin (V2) analogue (antidiuretic) · Hemostatic

Also known as Desmopressin acetate

START
Central DI: intranasal 10 mcg or oral 0.1 mg, titrate to urine output/sodium; enuresis 0.2 mg PO nocte + fluid restriction
TYPICAL MAX
Enuresis 0.4 mg/day; DI titrate to response
STOP IF
Hyponatraemia/symptoms, fluid overload, intercurrent illness with fluid disturbance (temporarily stop enuresis use)
WATCH
Serum sodium (baseline + during titration, illness), strict fluid restriction (enuresis/nocturia), avoid excess water intake
CDSCO approvedSchedule HATC H01BA02
Dose laddermg/d
0.1start0.2enuresis nocte0.4enuresis max/day0.8ceiling
Renal dose adjustmenteGFR mL/min/1.73m²
FULLUsual dosing50AVOIDContraindicated for enuresis/nocturia; DI with caution + sodi…90

KDIGO 2024 + manufacturer label

Pharmacokineticsplasma · t hours
1hONSET1.5hPEAK3h8hDURATION
ONSET
1h · antidiuretic onset
PEAK
1.5h · peak effect
3h · plasma t½
DURATION
8h · antidiuretic duration
EXCRETION
Peptidase; renal
route + CYP
INTERACTIONS
12 major
SEVERE in our sources
PREGNANCY
May be used for diabetes insipidus in pregnancy (resistant to placental vasopressinase) — generally considered acceptable
FDA category + note
Top interactionssee all 12
  • BeclomethasoneSevereDatabaseDDInter
  • BetamethasoneSevereDatabaseDDInter
  • BudesonideSevereDatabaseDDInter
  • BumetanideSevereDatabaseDDInter
Available in India

10 branded formulations. Look up specific brands in the Drugs workspace.

Mechanism

Selective V2-receptor agonist increasing renal water reabsorption (antidiuresis) without significant V1 pressor effect; also releases von Willebrand factor and factor VIII from endothelium (haemostatic).

Indications

Central (cranial) diabetes insipidusPrimary nocturnal enuresis (selected, with fluid restriction)Nocturia in adultsMild haemophilia A and von Willebrand disease (type 1) — bleeding prophylaxis/treatment

Dosing

Adult
Central DI: intranasal 10–40 mcg/day (1–4 sprays, divided) or oral 0.1–0.8 mg/day divided; injection 1–4 mcg/day. Nocturnal enuresis: 0.2 mg PO at bedtime (max 0.4 mg) with fluid restriction. Haemostasis: 0.3 mcg/kg IV/SC.
Pediatric
Enuresis ≥5 years: 0.2 mg PO nocte (max 0.4 mg); DI weight-based (specialist).
Renal adjustment
Contraindicated for enuresis/nocturia if CrCl <50; DI use with caution/monitoring.
Hepatic adjustment
No specific adjustment.
Geriatric
High hyponatraemia risk — avoid for nocturia unless sodium monitored; lowest dose.
Max dose
Enuresis 0.4 mg/day PO; DI titrated to response (intranasal ≤40 mcg/day typical)

Pharmacokinetics

Onset
Antidiuresis ~1 h; haemostatic factor rise ~30–60 min
Peak effect
~1–2 h
Duration
Antidiuresis 6–14 h (route-dependent); haemostatic ~6 h
Half-life
~3 h (intranasal/IV terminal ~2.8 h)
Bioavailability
Intranasal ~3–5%; oral ~0.1–0.2% (very low — hence mg oral vs mcg parenteral)
Protein binding
Low
Metabolism
Limited; peptidase
Excretion
Renal

Contraindications

  • Hyponatraemia or history of hyponatraemia
  • Moderate–severe renal impairment (CrCl <50 mL/min — enuresis/nocturia)
  • SIADH; habitual/psychogenic polydipsia
  • Heart failure / conditions needing diuretics
  • Hypersensitivity to desmopressin

Side effects

Common
HeadacheNauseaNasal congestion/irritation (intranasal)Facial flushingMild abdominal cramps
Serious
  • Severe hyponatraemia → seizures, cerebral oedema, death (esp. excess fluid intake, elderly, children)
  • Water intoxication
  • Thrombotic events (rare, haemostatic use in at-risk patients)
  • Hypertension/anginal exacerbation (rare)

Pregnancy & lactation

Pregnancy

May be used for diabetes insipidus in pregnancy (resistant to placental vasopressinase) — generally considered acceptable

Lactation

Compatible — minimal milk transfer/oral infant absorption

Drug interactions

Beclomethasone
Severe
Database

Clinical effect not specified

Source: DDInter

Betamethasone
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

Budesonide
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

Bumetanide
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

Ciclesonide
Severe
Database

Clinical effect not specified

Source: DDInter

Deflazacort
Severe
Database

Clinical effect not specified

Source: DDInter

Dexamethasone
Severe
Database

.

Source: DDInter

Drugs Causing Hyponatraemia
Severe
Database

Additive water retention → severe hyponatraemia

Avoid/monitor sodium closely; counsel fluid restriction

Source: Kimi deep-research + Cla

Etacrynic Acid
Severe
Database

Clinical effect not specified

Source: DDInter

Fludrocortisone
Severe
Database

Clinical effect not specified

Source: DDInter

Flunisolide
Severe
Database

Clinical effect not specified

Source: DDInter

Fluticasone
Severe
Database

Clinical effect not specified

Source: DDInter

Related guidelines

Ask House about Desmopressin

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

Sources: KD Tripathi 7e, Goodman & Gilman 14e, Harrison 22e, Katzung·Verified: 2026-05-19 · House clinical team·Cockpit curated: 2026-05-19