I'm sharing this information about hibiscus tea again because a number of friends missed the information. It's better to take natural treatments if possible, so read on.
I've been recommending hibiscus tea to lower high blood pressure.
In the Philippines, hibiscus is known as gumamela. Many Filipinos are not aware that you can make tea from gumamela flowers.
Here is a yutube link showing how to make hibiscus tea from the common gumamela flowers.
There are different varieties of hibiscus or gumamela and the kind generally used for medicinal tea is hibiscus sabdariffa. The calyx is used for tea.