Dead Wrong: Straight Facts on the Country's Most Controversial Cover-Ups by Richard Belzer, David Wayne

following:
•Computer chemical analysis determined that to reach the drug levels present, she must have ingested the contents of not less than seventy- seven and not more than eighty-eight pills: sixty to seventy Nembutal and seventeen to eighteen Chloral Hydrate;
•Pharmacy record research determined that Marilyn did not have access to more than twenty-five Nembutal capsules;
•She did not swallow the pills because it is impossible that she would not have any refractive crystals present, since her stomach contained only twenty cc’s of fluid. The Chloral Hydrate would have even slowed down the passing of the Nembutal out of her stomach—it slows down the absorption rate and also the rate at which the liver removes the Nembutal. So that would have actually made it an even better probability of finding Nembutal in her stomach, had she actually swallowed it;
•The high level of drugs in her body could not have been the result of previous drug use that her body had “stored”;
•She could not have “accidentally” swallowed too many pills because to get the amount of drugs found in her system, she would have had to swallow twice as many capsules as a person who was non-tolerant to the drug (Marilyn had a high tolerance);
•If she had swallowed that many capsules, she would have died long before the entire amount had been digested. Therefore, there would have been drug crystals undigested. No crystals mean that she did not swallow the drugs that killed her.
    The pills could not have been swallowed because (aside from the fact that there was nothing nearby to swallow them with!) the victim dies before they can digest that many pills. When the victim dies, the heart stops and so does the digestive system, inevitably leaving un digested traces of the drugs in the stomach and intestines- which she didn’t have!
Therefore, “with this amount she would have died long before the entire amount had completely digested past her stomach and completely past her small intestine. So in simple terms it would have taken so many capsules to kill Marilyn that there should have been undissolved capsules and been a lot of drug crystals found in her digestive system. No crystals mean that she did not swallow the drugs that killed her.” 63
    If she had swallowed the pills, then:
•The fact that there was no yellow die in her stomach from the pills may be explainable, but is certainly not likely;
•The fact that there was no capsule residue at all found in her stomach or intestines is almost impossible to explain;
•The fact that there were no refractive crystals found anywhere in her stomach or intestines is literally impossible to explain (if the drugs were ingested orally);
•Proving to a scientific certainty that she did not swallow the pills. The drugs—by scientific necessity—were ingested by a means other than oral, i.e., either anal or injection.
    Marilyn had far in excess of a fatal dose. And when her established high tolerance for the drug is factored into the equation, it was a massive overdose— one of 77-to-88 pills, and one that could not have been ingested orally (impossible), or via injection or IV (both would have bruised her substantially making the marks easily identifiable at autopsy). Therefore the vehicle of ingestion was anal:
“Marilyn did not swallow the drugs that killed her. She didn’t have any oral Nembutal in her possession. Still it was a very large amount of Nembutal that killed her and since it wasn’t swallowed or injected that only leaves enema bulb or IV (which would have taken a long time and left a mark).” 64
    Nor could it have been the result of some horrible medical miscalculation. That possibility has been suggested, because liquid Nembutal can also be administered via enema. The largest bags it was medically distributed in, circa 1962, were fifty cc bags of the drug. So, it has been posited that possibly someone meant to give her five cc’s but accidentally gave her all fifty cc’s