15mg is VERY low. Just had a look:
Usual Adult Dose for Depression
Initial dose: 50 mg orally once a day.
Increase dose by 50 mg increments no more often than weekly.
Maintenance Dose: Can increase once a week, to a maximum of 200 mg once a day.
Usual Adult Dose for Obsessive Compulsive Disorder
Initial dose: 50 mg orally once a day.
Increase dose by 50 mg increments no more often than weekly.
Maintenance Dose: Can increase once a week, to a maximum of 200 mg once a day.
Usual Adult Dose for Panic Disorder
Initial dose: 25 mg orally once a day, after one week, the dose may be increased to 50 mg once a day. Increase dose by 50 mg increments no more often than weekly.
Maintenance dose: Can increase once a week, to a maximum of 200 mg once a day.
Usual Adult Dose for Post Traumatic Stress Disorder
Initial dose: 25 mg orally once a day, after one week, the dose may be increased to 50 mg once a day. Increase dose by 50 mg increments no more often than weekly.
Maintenance dose: Can increase once a week, to a maximum of 200 mg once a day.