Anyone know about Soma?
Do more research. Forums and social platforms are not made for outsourcing necessary personal research for drug consumption onto others. There's a baseline of personal research required to safely use substances, and asking others to describe the dosage and effects of a drug is waaaaay under that baseline. That's super easy mode when it comes to research.
Seriously. Don't ask questions of dosage and effects of well known drugs on social platforms, it's a waste of both your time and ours. The questions have been answered time and time again on forums, reddit, etc. and the info is out there on various websites and wikis, also.