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.
1 The Invisalign Company estimates typical treatment costs at $3,500 -$8,000, with a national average of about $5,000, although the company says simple cases can cost $2,000 or less. According to Invisalign, treatment typically takes about a year for adults, and about the same amount of time as traditional braces (18-30 months) for teens. 2  For best results, the aligner tray should be worn 20-22 hours a day (including when the person is sleeping).