You can take Soma to get high.
It can be a very dangerous drug if mixed with other drugs also/alcohol.
I've stood my ground, and told them that she can't come here. Now Dad's not speaking to me because I have no compassion for my sister, who is trying so hard but her health is so compromised that she needs these drugs to function without pain.
I would let him be mad. If your worried at all about the kids being around anyone high, act on Their best interests, not the (Possible) drug induced emotions of the adults around them.
When we use drugs we have consequences that are different then when we don't, and we don't like that. In order for people to change they have to be uncomfortable.
So if it were me I would be confident with my decision.
JMO