Hibiscus leaves make a great tea, using a teaspoon of leaves in boiling water for about 5 minutes. I prefer mine poured over ice after that, and a pinch of monkfruit with erythritol.
I use a tea strainer to steep the loose leaves. Personally, I like to be able to get all the benefits of the organic flower, without the paper bags or any other preservatives or tea leaves to dilute the benefits. Plus, loose leaf gives me the freedom to add it to any other teas that I might want to supplement.
The benefits are great! Not only is Hibiscus a great cleanser for the liver, there is also anti-inflammatory, anti-viral, anti-bacterial benefits known to occur. It's high in vitamin C and Iron. It's also said to be great for digestion, boost your metabolism and control blood sugar.
Just don't go overboard... just like everything, drink it in moderation, or check with your doctor. Even too much of a good thing may have negative effects. (anything that says, cleansing should be moderated)
I've heard that the best time to drink it is after dinner, as it may help your body let go of the fats you just ate before you sit and relax for the night. Maybe this could be a new after-dinner sipping habit, for your health.