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PubMed1978

[Properties and stability of tetracycline hydrochloride tablets].

Three forms of tetracycline hydrochloride tablets were studied, i.e. the uncoated tablets, sugar-coated tablets and the tablets with gastric-soluble film coating. The film-coated tablets had advantages in the main quality characteristics, i.e. the contents of the tetracycline-like admixtures, the active substance and solubility rate. The possibility of the tablet stability investigation by the method of "accelerated aging" was shown.

Drug Stability↗
PubMed1976

[Galenical possibilities and problems in protraction of drug effects (author's transl)].

In recent years, dosage forms with sustained release have obtained a significant importance. The technological possibilities for manufacturing are described as coating, embedding and matrix procedures. The range of auxiliary substances, which are responsible for the retardation of drug activity, reaches from lipophilic compounds as lipoids, fatty alcohols and compounds which are forming hydrogels as cellulose derivatives and natural polysaccharides to synthetic polymers derived from acrylic acid. The formulation of the dosage forms requires particular care in respect to the amount of initial and maintenance doses. On account of technological processes, for example during manufacturing of tablets, under certain circumstances the liberation rate is altered. In vitro test methods allow comparisons only then when the results can be counter-checked by in vitro experiments. The release of drug follows different mechanisms, which are described, entirely or in part, to be reactions following the time law of zero or first order. In special cases, a linear correlation is observed as a function of square root of time. The calculation of given special equations for events within the dosage form is feasible from blood-level values.

Biological Availability↗
PubMedDate not supplied

[Pharmacokinetic study of sodium di-n-propylacetate (usual tablet and enteric coated tablet with delayed absorption) (author's transl)].

The authors study the blood levels of DPA after ingestion of the drug in the usual tablet form and after ingestion of an enteric coated tablet with delayed intestinal absorption. They emphasize the fast and very variable absorption of the drug in the usual tablet form which makes necessary the administration of several doses each day. They find a slower absorption from the enteric coated tablet resulting incumulative effects. This form allows an easier administration schedule (one dose in the morning and one dose in the evening). Moreover, the blood levels show less variation during a twenty-four-hour period. Undoubtedly, this new form is an improvement in comparison with the usual tablet.

Adult↗
PubMedDate not supplied

[Drugs in tablets].

Explore the source record for details and available documents.

Biopharmaceutics↗
PubMed1976

[Clinical treatment of inflammatory and benign ulcerous diseases of the stomach and duodenum with a new combination preparation (Aci-Tensilan) (author's transl)].

A gastroduodenal combination preparation was introduced at a deliberately high dosage into a clinical treatment schema. A marked improvement of the subjective symptoms already appeared after a short treatment in hospital, pain in particular being rapidly affected. Younger patients tolerated the preparation excellently, older ones had a marked sedation. Because of the danger of concealment, stenoses in the region of the gastrointestinal tract, ileus and preileus are particular contraindications. The dosage of 3 X 3 to 3 X 4 dragees should be reserved for hospital treatment. The dosage of 3 X 1 dragee for ambulant practice and also for prolonged therapy (ca. 6-8 weeks) is unobjectionable, reference being made to possible initial tiredness and disturbances of accomodation.

Adolescent↗
PubMed1977

[Potassium chloride and non-specific ulcers in the small intestine].

Gut toxicity due to potassium chloride preparations is well known, but there is little information concerning side effects of the newer slow release preparations. Small bowel ulceration due to the new slow release formulation is described. As far as the authors are aware this is the first such case published in Switzerland.

Administration, Oral↗