Kratom vs Tramadol: what I learned about opioids

I've been suffering from a Repetitive Strain Injury and had to take some opioid medications for a while. That taught me a few wise lessons about opioids that I discuss with two experts.

Mentioned in video: Fentanyl testing strips -

My injury wasn't the only reason why I haven't been uploading. Main reason was I had to spend serious time on making real cash. Youtube is just for passion but doesn't pay the bills right now. Luckily you can help :).

Please support this channel on Patreon, and help to spread knowledge about the harm of the War on Drugs:

Go check out the webshop of Yeah Science - which is still in its early stages:

Or check out some of the gear that was used to shoot this video

Panasonic GH5 -

Leica 15mm -

Rode NT2A -

Canon 600d -


Controlled Substance is a Youtube channel about drugs from a scientific perspective and without any taboos. We assume intelligence and responsibility from our viewers, since all are actors in one of the biggest conflicts of our time: the international War on Drugs.

This channel talks about substances as if they're a common cultural phenomenon. Because they are.

Controlled Substance is hosted from the Netherlands by science journalist Tyse Roes and is produced by Yeah Science!