Practice with much smaller things, like a rice crispy, or a mini-mandel.
Put it on your tongue, and take a huge gulp of water, and swallow.
Gradually work your way up to larger things over a few days, until you can take the pills. Then try doing 2 at a time, then 3, then 4…
In my heyday, I could swallow 10 large pills in one go. What a waste of pills.