No research directly compares the combination to either alone
General Areas of concern
These include targeted action on the central nervous system, excellent bioavailability, and the rapid onset of systemic effects
And what we know is it can really aid in repair, healing, reducing inflammation, [and a] bunch of other things that tend to be associated [with] these hallmarks of aging. Kekic spent more than a decade at the Mayo Clinic as one of the first pharmacogenomic clinical pharmacy specialists in the United States
There's no requirement to separate them by a specific number of hours, but using different injection sites is standard practice
As Harvard Health points out, symptoms often develop so gradually that you might not notice them, or you might attribute them to aging, stress, or other conditions