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"sink condition" and dissolution rate

Discussion in 'Pharmacy' started by gablet, 09.17.05.

  1. gablet

    gablet Senior Member

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    This may seem like a simple question, but it is just not clicking for me. Can someone please explain what the "sink condition" is? What would be a situation where a drug would be immediately absorbed upon dissolution - does it only happen in testing?

    Thanks!
  2. gablet

    gablet Senior Member

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    Well, I found it (not that anyone cares :( )

    "Sink condition assures the complete dissolution of the drug. Sink conditions re fer to the excess solubilizing ca p a c i ty of the dissolution medium."
  3. pharmaz88

    pharmaz88

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    SDN 7+ Year Member
    gotta' love 'ceutics. :)
  4. jboogie

    jboogie SDN Donor

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    SDN 5+ Year Member

    My understanding, Gabby is that this is right. It is when the Saturation point is so much lower than the drug entering solution that it is negligible and therefore, you do not need to account for it in the equation. ...Sorry this is too late for the test.... Hope you did well.
  5. ngphm7

    ngphm7

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    Pre-Pharmacy
    Sink condition: insignificance accummulation of drug in receptor (i.e. that drug cant reach the receptor chamber, maybe because of removal by blood flow)

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