More? A lot more? About the same?
A relative uses two types of insulin daily, a basal (Levimir) and a so-called fast acting (Humalog). The basal has recently been split into two dosages, and the Humalog more "as needed"(of course) which translates generally into two, or three varying dosages per day, for this particular individual -- who isn't much interested in changing what is familiar method of medication herself, even though she is now being assisted in way of blood glucose level monitoring and dosage, due to herself being hospitalized earlier this year -first for sky-high (over 1200!) blood sugar level, and then about a month after getting out of the hospital (it took about 5 days of hospitalization and IV's to bring the levels down to reasonable levels) later had the paramedics called to bring glucose for a blood sugar level of 30. That's right, 3 and zero. 10 times 3. So low she was unresponsive even with her eyes open...
I get the impression pens can be more convenient, specially to carry around, on the go.
I've been meaning to ask a pharmacist, but never remember to think of it, except when they are too busy filling prescriptions to have the time.
Please forgive if you will, my infringement on your own "time", here.
A very rough estimate. The pens are more expensive from what I have been told but I think their ease of use is probably worth it. Good Rx looks like it might be able to tell you what you want to know here.