Pints of Guinness were served to blood donors at Pelican house in Dublin and as evidenced by the way the droplet sank ball-bearing-like during this particular very occasional consumer's pre-letting anemia test must have proved a very high source of iron - and apparently to the extent that pregnant women were often recommended a daily dose also. Furthermore another pint the next day rather than a fizzy orange drink was more effective in quelling nauseau caused by its own enthusiastic over-consumption. A veritable panacea therefore.