For Hibiscus Tea to lower your blood pressure you need to drink the Hibiscus Tea daily for at least 12 days and then after 12 days of drinking the Hibiscus Tea you should see your blood pressure start to lower.
To keep your blood pressure lowered you should continue to drink the Hibiscus Tea daily.
Some people have said that drinking the Hibiscus Tea has lowered their blood pressure soon after drinking the Hibiscus Tea but some people it takes at least 12 days to see lower blood pressure.