Some thoughts

When I take supplements I am completely vertigo attack free. The longer i take them the longer I stay attack free if I stop taking 

I found no diminishing affects from caffeine nicotine or salt.

Once supplements are in my system taking once every week or two seems to be enough to stay attack free. 

If you're female and the idea of it creating testosterone scares you don't let it. Any testosterone it creates is probably minimal and if this supplement works for you it's not like you'll need it daily.