Answer
(Fatwa: 89/89/M=1432)
Probably, the problem of excessive urination is due to the weakness of bladder. You should consult any expert hakim or doctor. Recite surah al-Fatiha 7-7 times in the morning and evening, blow it on water and drink it. Also write the following ayah and tie it above novel:
اللَّهَ يُمْسِكُ السَّمَاوَاتِ وَالْأَرْضَ أَن تَزُولَا وَلَئِن زَالَتَا إِنْ أَمْسَكَهُمَا مِنْ أَحَدٍ مِّن بَعْدِهِ إِنَّهُ كَانَ حَلِيماً غَفُوراً [فاطر : 41]
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband