Is there a natural treaments for overactive bladder?

Yes. Follow bladder diet, avoid smoking and constipation. Pelvic floor pt or accupuncture can be very helpful. Nerve stimulation or medications can also help.
See below. But anything that helps u sleep will help some. Stop caffiene and use a fan. Try melatonin and avoid fluids for 3 hours before bed. No water pills! avoid acidic beverages and citrus. U can also try biofeedback.