Please advice the requirements for the f2 calcuation for different markets and different product, especially on the f2 (similarity factor) calculation for enteric coated tablets.
(reference guideline for the similarity factor calculation for Enteric Coated tablets)
the f2 calculation is same for both. the different is occured in the test procedure. the immediate release dosage forms could use 3 media (acidic, intermediate, and neutral), while the modified release use 2 media sequentially (acid and buffered) and 3 different speeds. please read the ICH guidance.