dosage of zoloft is individually determined by your medical provider based on your medical history response to previous treatments level of symptoms etc. there are not "common ranges" just the proper dosage that is determined by your medical provider and even this dosage must be titrated or adjusted based on your clinical response. i am not sure of the reason you are asking this question but the pharmacological management of ocd anxiety and depression is not something you should be doing on your own.
what's common range of dosage for zoloft? i have ocd anxiety and some depression.