Rennies is readily available on sale at most chemists. It does not need a doctor's prescription. Lots of people use it for an upset stomach. Most people think it is safe.
But it isn't!
Have a look at this research, which links Rennies with Dementia.
http://www.sciencedirect.com/science/article/pii/S0736467900002067
For an broader assessment of the dangers of Rennies, please click here. This article also covers the dangers of two other 'safe' and widely used antacid drugs, Gaviscon and Alka-Seltzer.
But it isn't!
Have a look at this research, which links Rennies with Dementia.
http://www.sciencedirect.com/science/article/pii/S0736467900002067
For an broader assessment of the dangers of Rennies, please click here. This article also covers the dangers of two other 'safe' and widely used antacid drugs, Gaviscon and Alka-Seltzer.