For the past 2 years, I have sporadically been taking 2 Gravol to help me sleep in blocks of 3 weeks when I am very anxious. Does this pose a danger?

Using Gravol sporadically for a few weeks at a time to help with sleep when feeling very anxious is not considered dangerous. However, it is important to address the underlying cause of your insomnia, such as anxiety, to potentially improve your sleep quality without the need for medication. It is advisable to consult with a medical professional about any spasms you are experiencing.