by Neil Bauman, Ph.D.
A man asked:
I just wanted to find out how much a 250 microgram (mcg) dose of Xanax (Alprazolam) compares with a 1 milligram (mg) tablet of Valium (Diazepam). I can’t seem to work this out!
It’s quite easy. There are 1,000 micrograms (mcg) in a milligram (mg), so 4 x 250 microgram tablets would be the same as 1 mg.
However, this has nothing to do with the strength of the various drugs. The strength of drugs varies, so, for exmaple, a 250 mcg dose of one drug might be pharmaceutically equivalent to a 5 mg dose of another drug. This is another story entirely.