It's fair to say that all of my life I have had a problem swallowing medication in pill form of any kind. When I was a kid if I really had to take it I would actually chew up asprin rather than actually learn how to swallow it with water properly! I finally got past that but it is still hard for my to swallow pills without gagging or feeling sick.
Which is tough as I get headaches quite frequently. I have always found that Advil works best for me (although everyone is different) and although the Liqui Gels are bigger than coated Advil (see my picture) because they do not have that nasty coating I find them easier to take. The manufacturers also say that the liquid is faster acting. I'm not sure about that, the timing seems about the same as standard Advil, but they do kick in pretty quickly, which, to me anyway, is all that matters.