Pharmaceuticals (Basel, Switzerland) , 18 (2)
This data helps us target deficiencies and adjust dosing safely
51,52 This suggests that unknown biological factors may play a role
Intranasal administration is valued as a non-invasive means of both systemic and local administration with good bioavailability, rapid onset, and targeted effects on the central nervous system [13, 14]
however, they have not yet been shown to enhance fertilization, implantation, or successful birth rates, and add to the cost and invasiveness of assisted reproductive techniques
31 Ejaculatory problems, such as retrograde ejaculation, premature ejaculation, delayed ejaculation (difficulty or inability to achieve ejaculation), and anejaculation (absence of ejaculation), can be underlying factors in male infertility