Unborn Child An adult brain exists in a well-controlled stable environment, which is effectuated by a semi-permeable membrane that separates circulating blood from the brain. This membrane is referred to as the “blood–brain barrier.” There i

    Opium Morphine and Heroin Opium comes from the sap of the papaver somniferum poppy plant. Morphine comes from opium. Heroin is derived from morphine.   Heroin often looks differently in different places. In gen

Testosterone is an essential component of a person's sexual health. That is why it's important to understand the full impact that heroin plays on testosterone levels.   Androgens and Testosterone Androgens are sex steroid hormones. They are m

Elimination half-life The "elimination half-life" is the time period it takes for the plasma concentration of a drug to be halved. Hence, each successive half-life, less drug is eliminated. After one half-life the amount of drug remaining in the b

  What is Addiction? Addiction is an uncontrollable drive to do something. Drug addiction is an uncontrollable drive to consume a particular drug. The Allure of Heroin   Drug Addiction Any drug that produces changes in brain reinforc

  Heroin is a pro-drug What is so ironic, is that heroin is really a prodrug, which means that heroin does not affect the brain. It is not so much that heroin cannot affect the brain, as much as it does not affect the brain. That's right, hero