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KETERSEDIAAN HAYATI
(BIOAVALABILITAS &
BIOEKUIVALENSI)
RUTE PEMAKAIAN OBAT
DEFINISI
• BIOAVAILABILITAS :
- KETERSEDIAAN OBAT DALAM DARAH YANG MENCAPAI SISTEM SIRKULASI
SISTEMIK DAN TEMPAT AKSINYA
- BIOAVAILABILITAS ABSOLUT : PERSENTASE/RASIO KETERSERSEDIAAN JUMLAH
OBAT DALAM DARAH DARI SUATU SEDIAAN OBAT YANG DIBANDINGKAN
TERHADAP BENTUK SEDIAAN OBAT INTRA VENA (I.V).
- BIOAVALABILITAS RELATIVE : PERBANDINGAN BIOAVALABILITAS SUATU PRODUK
OBAT TERHADAP STANDAR OBAT MURNINYA (LARUTAN MURNI)
• BIOEKUIVALENSI : RASIO KESETARAAN BIOAVAILABILITAS SUATU PRODUK OBAT
TERHADAP PRODUK OBAT INISIATOR
METODE PENGUJIAN
• KADAR OBAT DALAM DARAH
• KADAR OBAT TEREKSKRESI DALAM URIN
• EFEK FARMAKODINAMIK AKUT
• OBSERVASI KLINIS
• STUDI IN VITRO
PENGUKURAN KADAR OBAT DALAM DARAH
PARAMETER UJI
T MAX : WAKTU DIMANA KADAR OBAT DALAM DARAH MENCAPAI
PUNCAKNYA
C MAX : KADAR PUNCAK OBAT DALAM DARAH
AUC (AREA UNDER THE CURVE) : LUAS AREA DIBAWAH KURVA
(KADAR OBAT DALAM DARAH VS WAKTU)
PLASMA CONCENTRATION TIME PROFILE
AUC (AREA UNDER THE CURVE)
AUC (AREA UNDER THE CURVE)
[AUC]X
0 = F . D0 / CLEARANCE
CLEARANCE = Ke . VD
Ke = KONSTANTA KECEPATAN ELIMINASI
VD = VOLUME DISTRIBUSI
WHICH FORMULATION HAS HIGHER
BIOAVAILABILITY ?
BIOAVAILABILITAS ABSOLUT
I.V BOLUS
ORAL DOSAGE FORM (PRODUCT A)
BIOAVAILABILITAS ABSOLUT
BIOAVAILABILITAS RELATIF
ORAL DOSAGE FORM (PRODUCT A)
ORAL DOSAGE FORM (PRODUCT B)
BIOAVAILABILITAS RELATIF
PENGUKURAN KADAR OBAT TEREKSKRESI
DALAM URIN
PARAMETER UJI
-JUMLAH OBAT TEREKSKRESI KUMULATIF DALAM URIN (DU)
-KECEPATAN EKSKRESI (dDU/dt)
-WAKTU OBAT TEREKSKRESI MAKSIMUM (T MAX)
PENGUKURAN BIOAVAILABILITAS ABSOLUT
PENGUKURAN BIOAVAILABILITAS RELATIF
PENGUKURAN EFEK FARMAKODINAMIK AKUT
PARAMETER UJI
- EFEK FARMAKODINAMIK MAKSIMUM (E MAX)
- WAKTU TERCAPAINYA EFEK FARMAKODINAMIK MAKSIMUM (T MAX)
- AUC KURVA EFEK FARMAKODINAMIK VS WAKTU
- ONSET MUNCULNYA EFEK FARMAKODINAMIK
PENGUKURAN OBSERVASI KLINIS
 DILAKUKAN MELALUI UJI KLINIK TERKONTROL
STUDI IN-VITRO
 PENGUKURAN DILAKUKAN DENGAN UJI DISOLUSI OBAT
BIOEKUIVALENSI
PHARMACEUTICAL EQUIVALENTS
CONTOH UJI BIOEKUIVALENSI
KETERSEDIAAN HAYATI.pptx
KETERSEDIAAN HAYATI.pptx
KETERSEDIAAN HAYATI.pptx

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KETERSEDIAAN HAYATI.pptx