Drugs that bind to the opioid receptors (mu, delta & kappa).

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Can Opioids Attenuate some of the symptoms of Psychosis?

Can Opioids Attenuate some of the symptoms of Psychosis? I ask because there's a dead link on the Wikipedia page http://en.wikipedia.org/wiki/Opioid_dependence#Causes that's meant to support the ...
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Which Enzymes Degrade Dynorphins and what drugs are there available to inhibit said enzymes?

Which Enzymes Degrade Dynorphins and what drugs are there available to inhibit said enzymes?
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What's the therapeutic index of Pethidine (Meperidine in the US)?

What's the therapeutic index $\left(\frac{LD_{50}}{ED_{50}}\right)$ of Pethidine (Meperidine in the US) via the intravenous route for humans or whatever species you can find? The therapeutic window ...
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How do Opioids Stimulate a Histamine Release?

Histamine is a neurotransmitter that also has peripheral functions such as the regulation of gastric acid secretions, allergic responses, etc. I know that opioids stimulate a release of histamine but ...
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Which mixed opioid agonist/antagonist are approved for Human Use in Europe and/or the USA?

Which mixed opioid agonist/antagonist are approved for Human Use in Europe and/or the USA? I know of: Buprenorphine Butorphanol Nalbuphine Pentazocine Are there any others? If so I would like you ...