Ayman Rabayah
☆    

Jordan,
2020-03-03 08:48
(848 d 07:40 ago)

Posting: # 21192
Views: 1,756
 

 Meals in fast and fed studies [Regulatives / Guidelines]

Hi Helmut and colleagues

We need to put clear criteria for meal consumption in BE studies, specifically, meals in fasting studies and meals (besides the high fat breakfast) in fed studies? Subjects are dosed and then 4-5hrs later they're provided lunch, later perhaps a snack, dinner, etc. Depending on the Tmax of the drug, the meal after 4hrs from the dose could affect absorption. Subjects have a variety of food requirements; A tall man might require more food than a small man. Should subjects "be made" to eat 100% of their meal (for consistency between subjects) or is it fine for them to eat 75% or even less? How about later meals after 2xTmax? They won't affect absorption, so could subjects eat as much or as little as they want? Do we care about any meal but the high fat breakfast in fed studies?

looking forward to hear from you
Thank you
Dr_Dan
★★  

Germany,
2020-03-03 15:35
(848 d 00:53 ago)

@ Ayman Rabayah
Posting: # 21196
Views: 1,039
 

 Meals in fast and fed studies

Dear Ayman Rabayah
1: Make sure that the meal(s) is (are) identical in both (all) periods and document composition and consumption
2: AFAIK there is no requirement for content of meal for fasted studies
3: Your thoughts regarding consistency between subjects are irrelevant for cross-over designs as long as the subject´s behavior is the same in both (all) periods

Kind regards and have a nice day
Dr_Dan
UA Flag
Activity
 Admin contact
22,181 posts in 4,647 threads, 1,572 registered users;
online 6 (0 registered, 6 guests [including 3 identified bots]).
Forum time: Wednesday 17:28 CEST (Europe/Vienna)

Nerds don’t just happen to dress informally.
They do it too consistently.
Consciously or not, they dress informally
as a prophylactic measure against stupidity.    Paul Graham

The Bioequivalence and Bioavailability Forum is hosted by
BEBAC Ing. Helmut Schütz
HTML5