I have those Life Force vites too, and have no after taste.
you don't have to take all 4 at once...in fact its probably smater to space em out, one at breakfast 1 and 2, one mid afternoon, and one post workout..is how I'm taking mine.
also, take em first, followed by your meal, so the food acts like a 'plug' in your gut. this strategy also works to avoid fish burbs after taking non-enteric fish oil caps.
if you take either last, or without food, its easy for the body to leave a little in the esophogus which leads to aftertastes after 30-60 mins.