Hi @bethanderson49, congrats on the successful operation to remove 80% of the tumor. Don't you just love Dr. Q?
I can imagine that you want to be ready for a 5-day cycle of double dose temodar and be prepared for side effects like nausea.

Which type of CBD oil to use and what dosage is most effective is unfortunately not regulated and a bit of trial and error. Here's some information that can help inform your choice:
- Choosing CBD products https://www.healthline.com/health/cancer/cbd-for-cancer#products
- National Cancer Institute Cannabis and Cannabinoids https://www.cancer.gov/about-cancer/treatment/cam/patient/cannabis-pdq#section/_3 (patient version. See answers to questions 6 and 7)

I'm tagging @cindylb as she may have some tips to share about her husband's use of CBD oil when treatment his cancer of unknown primary. @mepowers and @eileen61 may also have some thoughts to add about temodar and treating an astrocytoma.

Beth: You might also consider talking about dosing of CBD with the oncology pharmacist at Mayo Clinic. Did you experience nausea with during the 42-day course of temodar?