When decreasing the dose of citalopram to completely wean off it, it is generally recommended to do so gradually to reduce the risk of withdrawal symptoms. One common approach is to decrease the dose by 5-10 mg every week. This gradual tapering can help minimize the chances of experiencing withdrawal symptoms such as sweating, agitation, or nausea. If you do experience any of these symptoms, you can either increase the dose or lengthen the time at that dosage level. It's always a good idea to consult with a pharmacist if you have any questions or concerns about tapering off a medication.