Opioid pharmacology and pharmacokinetics,biotransformation,pharmacodynamics,2000-2400 characters a side and 5 to 6 A4 sides of PDF text,behind the summary make small paragraph site where write about opioids and P450 cytochmrome (close relationship),sunergism and sntagonism of opiods and other drugs (sedatives-benzodiazepines,GABA-active substances,other opiates,cocaine,alcohol,barbiturates,Z-substances[zolpidem,stilnox,sanval],antidepressives,NSAID,paracetamol&caffeine-pain additives/supplementary analgesic, opioid antagonistic substances (pure antagonist - naloxone,naltrexone/peripheral(PAMA´s)-methylnaltrexon,naloxegol,naldemedine( obstipation cancel without analgesic antagonistic,partial agonists&agonist/antagonist-substances with dual effect-buprenorphine,pentazocine,nalbuphine(when administred to pure agonists addict, cuase strong "cold turkey" (withdrawal symptoms); crossing the hemtoencephalitic barrier and acting on receptors (mi,kappa,beta),long-term efect by taking high doses -> attenuation effects on receptors and more OUD(opiod use disorder) symptoms;