I'm a bit surprised to hear that it is Zoloft because that is an SSRI anti-depressant, not a benzodiazepine, which is usually what is prescribed for anxiety. Some anti-depressants do have a sedating effect, but that is not their primary purpose. And they usually take a while to work, weeks to a month. I hope that it does work for you, but if I were you, especially since you said you were sensitive to medications, I'd keep tabs on how it affects you and keep in touch with your doctor.