Bioequivalence and Bioavailability Forum

Main page Policy/Terms of Use Abbreviations Latest Posts

 Log-in |  Register |  Search

Back to the forum  Query: 2017-10-17 00:14 CEST (UTC+2h)

2012-02-22 16:23

Posting: # 8154
Views: 1,973

 Fasting or Fed condition (Canada) [Design Issues]


It's been a while since my last here I am again!

We would like to conduct a BE study in order to file our product in Canada, but we face a dilemma in the BE design. According to the already approved PIL of the Canadian reference product, the drug should be taken by mouth during a meal and with a large glass of water, while in the SmPC it is clearly stated that there are no clinically relevant differences in absorption when the reference product was administered either with food or in the fasting state. Keeping in mind that the Canadian Health Authority recommends BE studies under fed conditions only for specific categories of products (Guidance for Industry: Bioequivalence Requirements: Comparative Bioavailability Studies Conducted in the Fed State (2005)), we were of the opinion of conducting a BE study under fasting condition, while our Canadian CRO was of the opposite opinion. So, can you please share with us your point of view on the design? :ponder:

Thank you in advance for your assistance!

Edit: Subject line extended, document linked. [Helmut]

2012-02-22 16:56
(edited by drgunasakaran1 on 2012-02-23 05:33)

@ ElMag
Posting: # 8155
Views: 1,722

 Fasting or Fed condition (Canada)

Dear Mr.ElMag,

The type of studies need to be conducted for Canadian submission will vary depends on the drug molecule you are dealing with.

Category 1. If your drug molecule is a Uncomplicated Immediate Release dosage form;

You need to conduct only fasting study.
However, kindly be informed that if there is a documented serious safety risk to subjects from single-dose administration of the drug or drug product in the absence of food, only fed study is recommended.

Category 2. Complicated Immediate-Release Dosage Forms (narrow therapeutic range drugs, highly toxic drugs and non-linear pharmacokinetics drugs
You need to conduct both fasting and fed studies.

Category 3. Modified Release Drugs
You need to conduct both Fasting and Fed studies

However, be informed that for drugs in category 2 & 3, if there is a documented serious safety risk to subjects from single-dose administration of the drug or drug product in the presence of food or absence of food, only fasting study or only fed study respectively is recommended.

Hence, the study design (Fast and/or Fed study) depends on which category your drug fits into.

Dr.S.Gunasakaran, MD
Vice President-Clinical Research & Medical Affairs
AZIDUS Clinical Research Organization. Linkedin Profile
Global Moderator – ClinicalResearchForum
Back to the forum Activity
 Thread view
Bioequivalence and Bioavailability Forum | Admin contact
17,394 Posts in 3,725 Threads, 1,071 registered users;
29 users online (0 registered, 29 guests).

The rise of biometry in this 20th century,
like that of geometry in the 3rd century before Christ,
seems to mark out one of the great ages or critical periods
in the advance of the human understanding.    R.A. Fisher

BEBAC Ing. Helmut Schütz