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  • diclofenac  (3)
  • nadolol  (2)
  • 1
    Electronic Resource
    Electronic Resource
    The influence of food on the absorption of diclofenac as determined by the urinary excretion of the unchanged drug and its major metabolites during chronic administration (1981)
    Springer
    European journal of clinical pharmacology 19 (1981), S. 39-44 
    Details
    ISSN: 1432-1041
    Keywords: diclofenac ; metabolites ; urinary excretion ; food ; absorption ; chronic administration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Six healthy subjects took diclofenac as an enteric-coated preparation twice daily for 17 days under the following conditions: (i) fasting, (ii) 15 min before a meal, and (iii) immediately after a meal. Urine specimens were collected on two separate days of each regimen and diclofenac and its total monohydroxylated metabolites measured. Statistical analysis of the excretion of diclofenac and its metabolites showed that, during chronic administration, absorption was not significantly influenced by dosing before or after food. The absorption pattern after both these modes of administration was comparable to that obtained under fasting conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00558382
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  • 2
    Electronic Resource
    Electronic Resource
    Separate and combined effects of nadolol and nifedipine on the cardiac response to exercise (1985)
    Springer
    European journal of clinical pharmacology 28 (1985), S. 113-117 
    Details
    ISSN: 1432-1041
    Keywords: nadolol ; nifedipine ; tachycardia ; cardiovascular response ; healthy volunteers ; pharmacokinetics ; exercise heart rate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary In a placebo controlled exercise protocol using healthy volunteers the effects of nadolol 80 mg and 160 mg orally and of nadolol 80 mg during treatment with nifedipine 20 mg 8 hourly were compared. Resting systolic and diastolic blood pressures were reduced by both nifedipine (p〈0.05) and nadolol (p〈0.01) acting alone. An unexpected finding was that nifedipine alone significantly inhibited exercise tachycardia (p〈0.01) (8 to 12 h post dose). Predictably both doses of nadolol produced significant reduction in exercise tachycardia which was still apparent at 24 h. There was a linear relationship between log10 plasma nadolol concentration and reduction in exercise heart rate. The combined inhibitory effects of nifedipine and nadolol 80 mg on exercise heart rate showed partial additivity but did not summate. There was no pharmacokinetic interaction between the 2 drugs. The inhibition of exercise tachycardia by nifedipine, not previously documented, is consistent with an effect of the drug on the sinus node, as has been reported in in-vitro studies, and may contribute to the drugs efficacy in angina.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00609676
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  • 3
    Electronic Resource
    Electronic Resource
    A study of the effect of aspirin on the pharmacokinetics of oral and intravenous diclofenac sodium (1980)
    Springer
    European journal of clinical pharmacology 18 (1980), S. 415-418 
    Details
    ISSN: 1432-1041
    Keywords: diclofenac ; acetyl salicylic acid ; intravenous bolus administration ; oral administration ; interaction ; bioavailability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Previous studies have shown that aspirin interacts with orally administered diclofenac sodium, causing reduced peak concentrations, lower levels and decreased areas under curves. In this study, diclofenac sodium was administered orally and intravenously with and without aspirin, to 6 healthy female volunteers. After intravenous dosing both plasma levels and areas under curves were significantly reduced although none of the rate constants was affected. The volume of distribution of diclofenac was increased as was the plasma clearance. Oral administration with aspirin also resulted in lower plasma levels, particularly peak levels, and areas under curves. Comparison of AUC's for both modes of administration with and without aspirin suggested that lower levels after oral administration were not due to impaired absorption. These observations are best explained by decreased protein binding and increased biliary excretion of diclofenac in the presence of salicylate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00636795
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  • 4
    Electronic Resource
    Electronic Resource
    Nadolol in combination with indapamide and xipamide in resistant hypertensives (1985)
    Springer
    European journal of clinical pharmacology 28 (1985), S. 29-33 
    Details
    ISSN: 1432-1041
    Keywords: nadolol ; indapamide ; xipamide ; resistant hypertension ; compliance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Twenty-four hypertensive patients have been studied. All had blood pressure recordings greater than 160/95 mmHg on 3 occasions whilst taking a beta blocker and two other antihypertensive agents in therapeutic doses. Compliance was checked by intermittent urine analysis for the relevant beta-blocker. These difficult to control hypertensives were treated with nadolol alone, nadolol plus indapamide and nadolol plus xipamide each for 2 months in random order. The aim was to reduce the blood pressure to below 160/95 mmHg. The supine blood pressure on nadolol alone (167/100 mmHg) was comparable to that on the previous three drug regimens (157/100 mmHg), the other two treatments were more effective (145/90 and 148/93 mmHg respectively). Hypokalaemia (serum potassium below 3.5 mmol/l) occurred in six individuals but occurred more frequently on xipamide than on indapamide.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00635704
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  • 5
    Electronic Resource
    Electronic Resource
    The pharmacokinetics of diclofenac sodium following intravenous and oral administration (1979)
    Springer
    European journal of clinical pharmacology 16 (1979), S. 405-410 
    Details
    ISSN: 1432-1041
    Keywords: diclofenac ; plasma levels ; intravenous bolus administration ; oral administration ; enteric coating ; bioavailability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The pharmacokinetics of diclofenac were examined following single rapid intravenous injection and also following single oral doses to healthy female volunteers. After intravenous injection plasma levels of diclofenac fell rapidly and were below the limits of detection at 5.5 h postdosing. Individual drug profiles were described by a triexponential function and mean half-lives of the three exponential phases were 0.05, 0.26 and 1.1 h. After oral doses of enteric-coated tablets, the lag time between dosing and the appearance of drug in plasma varied between 1.0 and 4.5 h. However once drug absorption had commenced similar plasma drug profiles were obtained in different individuals. Peak plasma diclofenac levels ranged from 1.4 to 3.0 µg · ml−1. The mean terminal drug half-life in plasma was 1.8 h after oral doses. This value was not significantly greater than the value of 1.1 h following intravenous doses. Fifty percent of orally dosed diclofenac did not reach the systemic circulation due, predominantly, to first-pass metabolism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00568201
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