God made everything. I also think we try to get God off the hook sometimes with regard to things we would call dangerous or evil. The reality is that He has created a dangerous world.
One of the oddities I cam across is "poison dart frogs", as per the following link.
Poison Dart Frogs | National Geographic
These small frogs are beautifully and ostenatiously coloured, as a warning sign to would be predators. They are so obvious they give a strong hint they're dangerous to eat. One small frog of one species carries enough poison to kill ten men.
The odd thing is that scientists are uncertain where they get their poison from. Possibly their prey carry poison from plants which the frogs then assimilate when they eat the prey.
Yet the same frogs kept in captivity and fed on "clean" lab reared prey
never develop the poison.
This raises a few questions - first how did the frogs develop the immunity to be able to assimilate the poison without being harmed themselves? Yet presumably other species which eat the same prey don't develop the toxicity, nor are they killed by eating the same insect prey.
Second how are they "aware" they need to be brightly coloured to deter predators?
Third, what set the whole process in motion?
Fourth, should their toxin be used as a weapon?
As for human abuse of drugs, that's our responsibility, just as we will be held responsible for everything else we do. I enjoy a glass of wine, but I don't go and drink five bottles of the stuff at a single sitting. Christ drank wine, knowing full well that some people could become alcoholics.
The abuse of drugs will be laid right at our door - not God's.