Parkinson's disease (PD) and primary Restless Legs Syndrome (RLS)
#仿單變更2021
藥理
Pramipexole is a non-ergot dopamine agonist and binds with high selectivity and specificity to the dopamine D2 receptors and has a preferential affinity to D3 receptors; it has full intrinsic activity.
藥動學
Bioavailability: >90 % , time to peak concentration: ∼2 hr.
In humans the protein binding of pramipexole is very low (< 20 %) and the volume of distribution is large (400 L).
Renal excretion of unchanged pramipexole is the major route of elimination and accounts for about 80% of dose.
Elimination half-life: 8-12 hr. Pramipexole is not removed by hemodialysis
Patients with normal to mild renal impairment(ClCr>60 ml/min), starting dose 0.125 mg ORALLY 3 times per day, MAX 1.5 mg 3 times per day, Treatment of RLS: initial, 0.125 mg ORALLY once daily 2 - 3 hours before bedtime; May increase by doubling dose every 4 - 7 days to a MAX of 0.5 mg/day; in patients with severe and moderate impairment (ClCr 20~60 mL/min), up-titration every 14 days if needed. The tablet may be taken with food to minimize gastric irritation.
小兒調整劑量
腎功能調整劑量
Moderate renal impairment (ClCr 20-50 mL/min) : starting dose 0.125 mg twice daily, MAX 2.25 mg/day
Severe renal impairment (ClCr <20 mL/min): starting dose 0.125 mg once daily, MAX 1.5 mg/day