Ferrous sulfate is the Idiot's Prescript
ion for anaemia.
Once upon a time many years ago - the 30s I think - doctors only had one form of iron supplement available to them for use with gynaecological disorders etc. This was Ferrous Sulfate and is very poorly absorbed into the blood (via the liver if I remember correctly), particularly when the gut is damaged by pernicious anaemia for example, causes horrendous constipation for some patients, and scarcely does a darn thing to raise blood iron levels. Common result was a doc who insisted Mrs So-and-So was not taking her medication.
Fast forward a few years, some bright spark finds a form of iron that is taken up by blood cells in the spleen, avoiding all the above problems. Beautiful treatment. Alas, most doctors just never got the news, and in the UK at least fifty years later all the cheap generic government supplements recommended for use by the authorities used the old form because it was cheaper...and to this day, you have to be ill informed or an idiot to use the ferrous sulfate.
Not a great example of how medicine improves lives, more an example of how guidelines and mindsets can turn into developmental straitjackets.
Sorry I cannot recommend any brands Prof, but the best of luck anyway ! Prolapses are real bummers.