SSRIs, "Downers", Pot, even winos...
Hear me out... what has been your best strategy for combating anxiety?
How has your drug of choice helped you
I think the first and most important thing to understand is that the only well-tested, long-term, zero side-effect, "cure" for anxiety disorders is cognitive therapy, especially for panic disorder. If you suffer from an anxiety disorder, this is the treatment to investigate and learn. It does not take long, and it WILL relieve the problem. Permanently.
Medications:
Benzodiazepines are fast-acting and highly effective. Xanax is often prescribed for, and highly effective in quelling, panic attacks. The drug is among the fastest acting, and shortest lasting, of this family. It throws an emergency brake on the panic attack. Clonazepam is longer-acting, with a more delayed onset, and can reduce panic attacks, generalized anxiety, social anxiety, etc., throughout the day. There are a variety of medications in this class.
Unfortunately, there are drawbacks to the long-term and regular use of these medications. Tolerance often develops, reducing their effectiveness; abuse-potential is fairly high; and once off the medication, the underlying problem returns.
Because of the likelihood of some development of tolerance, and the abuse potential, it is very important that you take this medication ONLY as prescribed. Abuse, or an ill-advised combination of this medication with other substances, will ultimately reduce or eliminate this medication as a tool for controlling your anxiety. The abuse or combination will also lead to rebound anxiety, leading you to abuse the medication further, leading to further rebound anxiety, etc.
SSRIs have helped some with anxiety. They take a few weeks to work, are non-addicting, and do not seem to build tolerance in users. Side-effects, in comparison to benzodiazepines, are usually less dangerous. The most common side-effect, however, can be quite annoying.
Buspar is effective for some people. It's subtle, and takes some time to work. It's non-addictive, and has a very low side-effect profile.
The other drugs mentioned in this thread are the most part not recommended for anxiety. Imo it is common, but unwise, to treat anxiety with marijuana, especially in jurisdictions where such use is illegal. There are legal and more effective treatments available. Obviously treating anxiety with painkillers is especially unwise, and will only expand your problems.
I've heard of anecdotal success with some off-label use of medications like gabapentin for anxiety.
The Best Approach:
Find a psychiatrist or psychologist who is trained in cognitive therapy. Medication can be prescribed as an adjunct to the therapy. As you learn the therapy, however, you will find, in the case of panic attacks, that you simply don't have panic attacks any longer, and so do not find an occasion to use the xanax (or whatever was prescribed). You will likely have similar experiences with other types of anxiety disorders.
Good luck.