What is the best form to take kava?

As a keen observer of the intersection between finance and alternative therapies, I'm curious about the consumption methods of kava. Could you elaborate on the various forms available and which one is considered the most effective? I've heard of kava tea, capsules, and even extracts, but I'm not sure which form offers the best bioavailability and overall efficacy. Additionally, are there any particular health considerations or side effects that one should be aware of before incorporating kava into their routine? I'd appreciate a concise yet comprehensive response that sheds light on this ancient plant's optimal consumption method.