Caffeine can make people jittery and cause fast and sometimes anbormal heart rhythms. It sounds like you should stay away from caffeine. Reasons to seek a doctor would be if you are having passing out or near passing out episodes, palpitations, or if there's a history of young people dying suddenly in your family.
The total duration of treatment depends on the complexity of the treatment and is generally comparable to that of traditional braces. Typically treatment can last between 9 and 18 months. During your consultation, your Invisalign Provider can provide you with more detailed information.
Q: How long until you start to see results? A: I remember seeing a difference in as little as 6-8 weeks. Q: How do you clean your Invisalign aligners? A: Although the Invisalign pamphlet says not to use denture cleaner, I did it any way. I soaked them in Efferdent every morning while eating breakfast.