think of this like cars. its easy to get a car to go from 0-60, 60-100, why isn't it easy to get from 100-160. its a compounding effect, similar to tires. easy from 0-150mph, 150-200mph is a completely different ballgame.
30mg phera and 20mg epi is similar in methyl harshness to be doing a double dose of the strongest compound in the mix - 60mg of phera.
nobody gets sclerosis of the liver from average drinking - its taking that little bit more that causes an issue. how much more is defendant on your body. its the h-drol added in that makes this a problem. thats taking the compounding effect to a different extreme.
using the car example, thats like running generic tires on a pinto and trying to get it up to 200mph. possible? maybe, if its going downhill, or off a cliff, same as your liver. be safer next time around brotha.
the phera and epi aren't that bad stacked IMO, but for gods sake drop the hdrol.