Prostadine-: So, now that we have a proper understanding of how the supplement works and what benefits you can derive from the supplement, let us look into how exactly these benefits are backed by clinical trials: Studies show that bladderwrack contains iodine and other trace minerals that can help support healthy urinary function by promoting normal muscle contractions in the bladder wall and helping to regulate fluid balance in the body. A study published in the World Journal of Urology found that taking nori yaki (a type of seaweed extract) supplements may help improve bladder health in people with lower urinary tract symptoms. The study involved 48 participants with IC/BPS and lower urinary tract symptoms. After taking the supplement for 8 weeks, the participants reported a significant reduction in urinary frequency and urgency.