Water, barley malt (gluten), corn extract & of hops. There are a handful of yeasts that aren't Ale or Lager, and each one has its own special flavor and profile. To add a small portion of Black Malt you have to guess the amount that will be used, and you will see below in the recipe that I choose to use only a small portion of Special B to give this beer the necessary color (and a little more complexity in the flavor of the malt). Personally, I haven't produced a beer fermented solely with Brett's yeast, but based on my readings, those beers tend to be less fun and fruity (esters) are the main characteristic of yeast.
Drinking Heineken beers can have a variety of health effects, depending on factors such as how often you drink and what other types of alcohol you consume. Some possible effects include weight gain, increased blood pressure, heart damage, liver damage, and increased risk of certain types of cancer.