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  • 1
    Electronic Resource
    Electronic Resource
    Pharmacodynamics and pharmacokinetics of furosemide combinations with potassium-retaining and thiazide-like diuretics: Clearance and micropuncture studies (1986)
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 333 (1986), S. 457-461 
    Details
    ISSN: 1432-1912
    Keywords: Furosemide ; Hydrochlorothiazide ; Tizolemide ; Amiloride ; Triamterene ; Interactions ; Pharmacokinetics ; Micropuncture
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The interaction between furosemide on the one hand and hydrochlorothiazide, tizolemide, amiloride and triamterene on the other was studied by clearance and micropuncture techniques in rats. Simultaneous administration of furosemide with hydrochlorothiazide and tizolemide distinctly increased the natriuresis compared to that induced by furosemide alone, whereas the potassium excretion diminished. In contrast, amiloride and triamterene primarily decreased furosemide-induced fractional potassium excretion by about 30%, whereas sodium excretion increased only slightly compared to that produced by furosemide alone. Hydrochlorothiazide and triamterene significantly decreased furosemide secretion and changed its pharmacokinetics. Furosemide plasma concentration increased, thus possibly prolonging the salidiuretic effect. Amiloride and tizolemide did not influence the secretion of furosemide at all.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00500025
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Bioavailability of disopyramide in normal volunteers using unbound concentration (1987)
    Springer
    European journal of clinical pharmacology 32 (1987), S. 625-629 
    Details
    ISSN: 1432-1041
    Keywords: disopyramide ; bioavailability ; saturable binding ; pharmacokinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The pharmacokinetics of disopyramide were determined in 10 healthy volunteers after a 300 mg oral dose and again after a 2mg/kg i.v. dose. The unbound clearance was 599 ml/min and the unbound renal clearance 310 ml/min. The terminal elimination rate constant of unbound drug was 0.180 h−1 after the i.v. dose and 0.203 h−1 after the oral dose. The absorption rate constant was 0.53−1 and the maximum peak concentration occurred after 3.2 h. The bioavailability was 0.809 using the area under the unbound plasma concentration time curve. Although a saturable plasma protein binding was found in all subjects the bioavailability using the total concentration, in contrast to theoretical expectations, showed the same value (0.813) as the unbound concentrations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02456000
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Steady state bioavailability of a new oral formulation of Hydergine® in geriatric patients (1984)
    Springer
    European journal of clinical pharmacology 26 (1984), S. 133-135 
    Details
    ISSN: 1432-1041
    Keywords: co-dergocrine mesylate ; geriatric patients ; hydergine ; bioavailability ; steady state
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The relative bioavailability of the newly developed formulation of co-dergocrine mesylate (Hydergine spezial, 1×4 mg) was determined in elderly patients under steady state conditions, with conventional Hydergine forte tablets (2×2 mg) as a reference. Both formulations were given once a day for 8 days in a randomised cross-over design. The areas under the curve showed that the bioavailability of the new tablet was about 30% higher (28±6.3%) than that of Hydergine forte. The peak plasma concentration was reached 3±0.9 h after administration. Because of its greater relative bioavailability higher plasma levels were found 2–24 hours after the Hydergine spezial formulation than after Hydergine forte tablets.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00546722
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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