Please do your math before buying. As far as I know, digoxin is only sold in 0.25mg strength and you need 100mg. That's 400 pills, not to mention the other drugs. That's why I suggested looking for pure powdered drugs.
Don't worry about what maniac116 says: the DDMAPh protocol was designed by doctors and underwent several reviews and years of improvement. There have been very rare cases of people regaining consciousness and quite a few cases of people taking many, many hours to die, but it's very, very unlikely that'll happen to you (unless you have gastroparesis maybe). Keep in mind that people going with this protocol are terminally ill and the vast majority are aged 65 and older. Their bodies are frail and don't work as they should, some of them have problems with the absorption of drugs.
I've never read of anybody surviving this drug cocktail. This is not a traditional overdose and the 86% thing mentioned before is just ridiculous in this case.