I have the same problem. I live aborad, so I tried to make sure I had everything I needed in the US before my surgery. I've also used Amazon in some cases, but not everything ships internationally, and when it does, its not exactly cheap either.. But I know the products arrive and dont get stuck in customs, which is a huge plus. To figure out what products on amazon ship internationally, I usually put a lot of options in my cart and then when I check out I can see if which products can be shipped and which can't and delete from there.
But as it turns out, the products you buy may not necesarily agree with you. The chewable multivitamins, I found out later just didn't work for me, but I will try getting some gummy version in hope that it is gentler on the stomach. That being said, I have tolerated swallowing biotin and omega 3/fish oil capsules with no problem after a Protein shake, so you should be fine with those. I actually had bought chewable biotin, but dont find they were worth it, since I get a larger dosis from and can totally swallow the capsule version. But the supplements you name are exactly the ones I am taking, so sounds good to me! Good luck!