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  2. Metformin - Wikipedia

    en.wikipedia.org/wiki/Metformin

    Metformin has acid dissociation constant values (pK a) of 2.8 and 11.5, so it exists very largely as the hydrophilic cationic species at physiological pH values. The metformin pK a values make it a stronger base than most other basic medications with less than 0.01% nonionized in blood.

  3. Henderson–Hasselbalch equation - Wikipedia

    en.wikipedia.org/wiki/Henderson–Hasselbalch...

    The Henderson–Hasselbalch equation relates the pH of a solution containing a mixture of the two components to the acid dissociation constant, K a of the acid, and the concentrations of the species in solution. [6] Simulated titration of an acidified solution of a weak acid (pK a = 4.7) with alkali

  4. Bjerrum plot - Wikipedia

    en.wikipedia.org/wiki/Bjerrum_plot

    Example Bjerrum plot: Change in carbonate system of seawater from ocean acidification.. A Bjerrum plot (named after Niels Bjerrum), sometimes also known as a Sillén diagram (after Lars Gunnar Sillén), or a Hägg diagram (after Gunnar Hägg) [1] is a graph of the concentrations of the different species of a polyprotic acid in a solution, as a function of pH, [2] when the solution is at ...

  5. Protein pKa calculations - Wikipedia

    en.wikipedia.org/wiki/Protein_pKa_calculations

    The pH-dependence of the activity displayed by enzymes and the pH-dependence of protein stability, for example, are properties that are determined by the pK a values of amino acid side chains. The p K a values of an amino acid side chain in solution is typically inferred from the p K a values of model compounds (compounds that are similar to ...

  6. Metformin Can Help You Lose Weight Loss, But It Also Has ...

    www.aol.com/metformin-help-lose-weight-loss...

    Another small study on people without diabetes who were overweight or had obesity found that those taking metformin lost between 5.6 and 6.5 percent of their body weight. In contrast, the control ...

  7. Buffer solution - Wikipedia

    en.wikipedia.org/wiki/Buffer_solution

    Buffer capacity falls to 33% of the maximum value at pH = pK a ± 1, to 10% at pH = pK a ± 1.5 and to 1% at pH = pK a ± 2. For this reason the most useful range is approximately pK a ± 1. When choosing a buffer for use at a specific pH, it should have a pK a value as close as possible to that pH. [2]

  8. Trough level - Wikipedia

    en.wikipedia.org/wiki/Trough_level

    In medicine and pharmacology, a trough level or trough concentration (C trough) is the concentration reached by a drug immediately before the next dose is administered, [1] [2] often used in therapeutic drug monitoring.

  9. Pharmaceutical formulation - Wikipedia

    en.wikipedia.org/wiki/Pharmaceutical_formulation

    5-10% of the drug (active substance); 80% of fillers, disintegrants, lubricants, glidants, and binders; and; 10% of compounds which ensure easy disintegration, disaggregation, and dissolution of the tablet in the stomach or the intestine. The dissolution time can be modified for a rapid effect or for sustained release.

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