CLINICAL USE


Primary Raynaud’s syndrome

DOSE IN NORMAL RENAL FUNCTION

40–80 mg 4 times daily

PHARMACOKINETICS

  • Molecular weight &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp :315.8
  • %Protein binding &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp :No data
  • %Excreted unchanged in urine &nbsp &nbsp : <1
  • Volume of distribution (L/kg) &nbsp &nbsp &nbsp :Low1
  • half-life – normal/ESRD (hrs)&nbsp &nbsp &nbsp :1–2

    DOSE IN RENAL IMPAIRMENT

    GFR (mL/MIN)

    25–50 Dose as in normal renal function10–25 Dose as in normal renal function
  • <10 &nbsp &nbsp &nbsp &nbsp &nbsp : Dose as in normal renal function

    DOSE IN PATIENTS UNDERGOING RENAL REPLACEMENT THERAPIES

  • CAPD &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp:Unlikely to be dialysed. Dose as in normal renal function

  • HD &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp :Unlikely to be dialysed. Dose as in normal renal function
  • HDF/high flux &nbsp :Unlikely to be dialysed. Dose as in normal renal function
  • CAV/VVHD &nbsp &nbsp &nbsp:Unlikely to be dialysed. Dose as in normal renal function

    IMPORTANT DRUG INTERACTIONS

    Potentially hazardous interactions with other drugsAlpha-blockers: possibly severe postural hypotension when given in combination
  • Beta-blockers: possibly severe postural hypotension when given in combination

    ADMINISTRATION

    Reconstition

    Route

    Oral

    Rate of Administration

    Comments

    OTHER INFORMATION

    Theoretically may decrease insulin requirements in diabetics