Contrary to popular belief, different routes of administration differ not only in the time of onset of the peak, the shade of the effect itself is also different. There are substances that work best through a certain ROA, but this is a matter of taste.
For example, MDMA will reveal itself fully only when consumed orally; d,l-amphetamine is simply designed for intranasal use. For a while I preferred oral intake, but lately I find it too hard on the body, the physical stimulation is too tiring. But with intranasal use, everything is different - I feel lightness and ease, the peripheral nervous system does not bother me at all with excessive activity. Mentally, intranasal administration is much more manic, I assume that when taken orally, l-amphetamine acts predominantly in the periphery, and when administered intranasally, most of it is distributed to the brain (nose-to-brain pathway); Oral keeps me constantly in motion or in mental cycles, while intranasal gives me much more headspace. In addition, I feel as if my mental activity is accelerated significantly; when taken orally, on the contrary, I am confused due to excessive peripheral load. This often leads to impaired visual perception (palinopsia, double vision), which never happens with intranasal use.
For example, MDMA will reveal itself fully only when consumed orally; d,l-amphetamine is simply designed for intranasal use. For a while I preferred oral intake, but lately I find it too hard on the body, the physical stimulation is too tiring. But with intranasal use, everything is different - I feel lightness and ease, the peripheral nervous system does not bother me at all with excessive activity. Mentally, intranasal administration is much more manic, I assume that when taken orally, l-amphetamine acts predominantly in the periphery, and when administered intranasally, most of it is distributed to the brain (nose-to-brain pathway); Oral keeps me constantly in motion or in mental cycles, while intranasal gives me much more headspace. In addition, I feel as if my mental activity is accelerated significantly; when taken orally, on the contrary, I am confused due to excessive peripheral load. This often leads to impaired visual perception (palinopsia, double vision), which never happens with intranasal use.