Analyse text and make summary, 2800 characters pro 1 A4 site of PDF text, make complex analyse and find all info on web (http://www.pubmed.com and www.pubchem.com) find for "opioid pharmacology" (morphine, hydromorphone,hydrocodone,dihydrocodein,buprenorphin,pentazocine,pethidine-dolsin,etc..), summary about pharmacology of opioids all around -> 2 sites, pharmacokinetics,pharmacodynamics,bio-availability of opiods in most common scenarios, strenght relatinoship -> P450 & opioids , especialy CYP3A5 and CYP2A4, correlation with the rate of absorption and overall bioavailability, risks of critical overdose through combination with another opioates, sedatives - benzodiazepines,Z-substances (sanval,zolpidem,etc..),partial agonists and agonist/antagonists ! Through administration of an agonist/antagonist may result in severe withdrawal symptoms ("cold turkey") and other manifestations of withdrawal; last site -> Information and characteristics of the strongest opioids—such as fentanyl, sufentanil, alfentanil, and remifentanil—as well as the most potent known opioids and illegal substances , extremely strong substances.