* Administration '''Day 1-14:'''Gradually decrease the dosage of hypericum. * '''Day 15:''' stop administration of hypericum can be stopped abruptly.| start = * '''Day 115-730:''' a wash-out period of one week at least two weeks is necessary.* '''Day 831:''' start administration of citalopram/escitalopram in a dosage of 20 mg/day, resp. 10 mg/day.* If necessary, increase dosage of citalopram/escitalopram.

* Occurrence of the serotonin syndrome is theoretically possiblewithout wash-out period.* Hypericum slows induces enzymes of the metabolism of citalopram/escitalopram via CYP3A4CYP P-450 type and P-gp. This effect may persist up to two weeks after stopping hypericum, so caution is necessary* Hypericum probably has MAO-inhibiting properties.}}