The main components of the OTC products such as MHP Expel or Taraxatone are Dandelion Root & Uva Ursi. You can get dandelion root pretty cheaply at most drug stores, etc. I'd start w/ that. And then revisit your diet to see what specifically is causing the water retention. If you're doing a carb rotation or big refeeds, expect to be bloated for a few days while your body is assimilating the carbs. If you're eating a lot of sodium, try reducing this. Otherwise if you're running a cycle w/ something that aromatizes, then you need to explore an AI.