mayur661
☆    

India,
2010-06-02 16:57
(5864 d 04:11 ago)

Posting: # 5411
Views: 4,692
 

 Dose for BE study [Design Issues]

By using 2 different doses can we get bioequivalence?
e.g Fasting condition: 200 mg/5mL dose
   fed condition: 400 mg /10 mL dose


Edit: Category changed. See also here. [Helmut]
Dr_Dan
★★  

Germany,
2010-06-02 17:11
(5864 d 03:56 ago)

@ mayur661
Posting: # 5414
Views: 3,965
 

 Dose for BE study

Hi
just some questions:
Dose proportional pharmacokinetics?
Dose proportional formulations and biowaiver criteria applicable?
If both criteria apply your first formulation will have half the bioavailability of the second formulation, i.e. absolut bioinäquivalent but relative bioequivalent.
What is the reason for two different doses (strengths)?
Regards
Dan

Kind regards and have a nice day
Dr_Dan
mayur661
☆    

India,
2010-06-03 16:28
(5863 d 04:39 ago)

@ Dr_Dan
Posting: # 5426
Views: 3,905
 

 Dose for BE study

formulation is dose propotional.
But when use 200 mg dose for fed study refrnece product concentration can not detected very well. So for this reason 400 mg dose used.


Edit: Full quote removed. Please see this post! [Helmut]
Helmut
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Vienna, Austria,
2010-06-03 16:38
(5863 d 04:30 ago)

@ mayur661
Posting: # 5427
Views: 4,165
 

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Dr_Dan
★★  

Germany,
2010-06-03 17:06
(5863 d 04:02 ago)

@ mayur661
Posting: # 5429
Views: 3,871
 

 Dose for BE study

Dear Mayur661
Honestly, if you know, that there is such a significant food effect on only the reference formulation that you need twice the dose compared to test, how can you think to reach bioequivalence in the fed state? You have a different formulation with a different PK characteristic and different food effect. No chance, you have to reformulate!
Kind regards
Dan

Kind regards and have a nice day
Dr_Dan
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