Prepare a decoction using 10-15 grams of Palasha bark. Take this decoction twice daily for 12-14 days before your expected date of menstruation. Continue this regimen until the onset of menstruation. Repeat this treatment for three consecutive menstrual cycles. Additionally, you can consume a mixture of 160 grams of Palasa flowers and double sugar with milk twice daily, which is also helpful in managing menstrual irregularities.