Each person will react differently to Resurge.
You can start using it for 30-60 days and test to see how you feel. You can also go off of it and test how you respond to taking time off.
You will have to learn how your body responds and decide how long to use it and when it feels appropriate to take time off. With that said all ingredients have been shown to be safe for regular use and have a long history of regular safe use.
As with any supplement individual sensitivity will vary and this is what you need to pay attention to.
