Thank you for your question. As you have pointed out, it is essential for your treating doctor to make you aware of any known possible interactions between medications prior to your treatment. It is reassuring that both Seroquel and Progesterone have not be reported to interact with Botox treatments. In addition, Botox treatment to the forehead should not be associated with breathing changes directly, but rather this may be related to possible anxiety associated with undertaking Botox treatment. I would advise for you to consult with your treating doctor so that your medical history and medications can be reviewed prior to the treatment and attend your follow up review so that any post treatment concerns can be addressed. For further information on Botox and possible side effects, please refer to the following web reference to the manufacturer's (Allergen) medication guide on Botox.