Step 4: Read and complete the decision guide to learn more about your symptoms.
Sometimes anxiety is a side effect of a medication that you are taking. Here are some drugs or groups of drugs that can cause anxiety:
stimulants, such as Ritalin or amphetamines.
caffeine in coffee or tea -- any over the counter medications have caffeine in them (for example, some cough medicines, NoDoz and Excedrin)
some decongestants (for example, Sudafed)
psychiatric medications, including antidepressants
hormones (for example, thyroid medication or birth control pills)
Have your recently started or increased the dose of one of these types of medications?