maybe you can practice swallowing other stuff and swallowing in a different way.
Growing up some people usually have problems with that.
Just try it a dozen times, Its mostly psychological because every day you do swallow bigger things. For instance when you eat, some of the food you've mashed is still larger than the size of most pills when you do swallow them.
It's not a matter of lack of capacity to do, it's a matter of your subconscious so this is harder to change. Trick your mind into it. One good trick is to put a pill inside a tequila shot and take it. Usually you have to drink the tequila pretty fast so you'll get the pill most of the times. Try it initially with tequila (just for practice) and your subconscious will adequate your mind into believing you can actually swallow. Practice makes perfect, go around and swallow, swallow a lot, the most that you can, or at least try to. Afterwards you'll be able to easily sip it with 1/5 of a glass of water and later on you won't even need liquid to swallow it.
