It should be mixed with milk or something thick or the DMSO will pull the elemicin through the walls of your stomach. But I don’t this is what went wrong. It should be VERY STIMULATING if that happened.

This is the effect of myrcene and not elemicin. There is something definitely wrong. Elemicin is should not be at all sedating, but myrcene definitely is. Those are the effect of myrcene. Somehow it got into your extract. I wonder how.

What kind of DMSO are you using? It is somehow pulling myrcene into your product.

That doesn’t sound like elemicin at all. It should be stimulating, not sedating, and the effects should last 8 hours, not 4. That's myrcene you're experiencing. Maybe your oil is extremely low in elemicin?

SWIM has given his oil out to several others, and a few have taken up to 4 ml extracted into DMSO, and none of them reported sedative effects. So something is definitely wrong.

Do you have a UV light? Can you check the color of your DMSO with the UV light?

What does your oil smell like? It should smell like nutmeg and roses. The nutmeg scent should be strong because that's the scent of elemicin.