According to the manufacturer website, https://www.chantix.com/support-for-taking-chantix/how-to-take-chantix#starting-with-chantix
both the starting package and the continuing package have a days supply of 28 days.
Patient is prescribed 10g of Glucose. The glucose is presented as a 5% solution in 500ml Saline. How much of the 5% dextrose saline solution do you need