[LaikaF]

Fentanyl doses in micrograms I believe. A lot of addicts are addicted to the feeling of the injection and the ritual of it as well.

Heroin I believe doses in the tens of mgs, which is hard to measure precisely but can be weighed on a twenty dollar scale. You could distribute fent in the same way Lsd is on blotter paper. The big difference is you accidently get a hot spot of Lsd it's not fatal.

Many addicts aren't buying massive quantities at once either nor are they getting it from the internet.

[refurb]

Typical dose of fentanyl in the medical setting for an adult is 100 ug (0.1 mg). For heroin (diamorphine in the UK), it’s 5 mg. A 50x difference.

[robbiep]

A typical dose is 25 mcg, I certainly wouldn’t give an opioid naive person 100mcg in a go. Dose low and go again if relief not adequate