There are two new LSD-derived drugs that were both published in response to Germany banning 1S-LSD

There are two new LSD-derived drugs that were both published in response to Germany banning 1S-LSD.
On one hand, there is 1Fe-LSD, that was created by LizardLabs, who were responsible for all LSD variants over the last couple of years, and who are now retiring. There are safety concerns about the ferrocene contained in it being a carcinogen and about it potentially crossing the blood-brain barrier.

The current level of pharmacological research suggests that this risk is minor in case of occasional consumption, but there is no clear evidence in either direction. Long-term effects are unknown.

On the other hand, there is BP-LSD from an undisclosed lab, which contains boron. There have also been insider reports that the lab sells products with low purity. It's mainly being sold by a German shop with a bad reputation.

My advice would be to avoid 1BP-LSD.

Regarding 1Fe-LSD, LizardLabs have been known for their high quality standards, but I'd rather be patient for now. It's still a new substance, we might know more in a couple of months.

Of course, the only LSD variant that is known to be physically safe is LSD25, which is illegal in most countries. The safety concerns will get worse with each ban and the only sensible decision would be to legalize LSD25.