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136 results about "Therapeutic window" patented technology

The Therapeutic window of a drug is the range of drug dosages which can treat disease effectively while staying within the safety range. In other words, it is the dosages of a medication between the amount that gives an effect and the amount that gives more adverse effects than desired effects. Medication with a small pharmaceutical window must be administered with care and control, frequently measuring blood concentration of the drug, since it easily gives adverse effects, including irreversible damage.

Pain relieving bilayer controlled-release tablet and preparation method thereof

The invention provides a pain relieving bilayer controlled-release tablet which comprises a quick release layer and a slow release layer, wherein holes are formed in the slow release layer; the holes are filled with quick release particles; the quick release layer and the quick release particles consist of pain relieving drugs and pharmaceutical adjuvant; the slow release layer consists of pain relieving drugs, slow release materials and pharmaceutical adjuvant. The pain relieving bilayer controlled-release tablet has the following technical effects: 1) the bilayer tablet has better physical stability than a common bilayer tablet, so that the storage and the transportation are convenient; 2) the disintegration time limit of the quick release layer of the bilayer controlled-release tablet is 10-30 seconds through the detection of the dissolving experiment; the slow release layer presents the zero-level release mode; the medicine taking effectiveness and safety of patients are largely improved. In the preparation process of the bilayer tablet, the quick release particles are filled in the holes. The quick disintegration of the quick release layer after the medicine taking is guaranteed through the drug release mode of combining the quick release with the slow release, so that the blood concentration can quickly achieve the range of a therapeutic window; the slow release layer is slowly released in a longer time period to continuously maintain the treatment effect; the toxic or side effects are effectively controlled.
Owner:越洋医药(广州)开发有限公司

Hypnotic double-layer controlled release tablet and preparation method thereof

The invention provides a hypnotic double-layer controlled release tablet, comprising a rapid-release layer and a slow-release layer, wherein the rapid-release layer is provided with pores which are filled with rapid-release particles; the rapid-release layer and the rapid-release particles are composed of hypnotic drug and pharmaceutical excipients; the slow-release layer is composed of a hypnotic drug, a slow-release material and pharmaceutical excipients. The hypnotic double-layer controlled release tablet has the following technical effects that 1) the physical stability of the double-layer tablet provided by the invention is better than that of the common double-layer table, which is advantageous for storage and transportation, and 2) a dissolution test detects that the disintegration time limit of the rapid-release layer of the double-layer tablet provided by the invention ranges from 20 seconds to 30 seconds; and the slow-release layer is in a zero-order release pattern, and therefore the effectiveness and safety of medication for a patient are greatly improved. In the preparation process of the double-layer tablet, the rapid-release particles fill in the pores. The drug release pattern of combined rapid release and slow release guarantees that the rapid-release layer is disintegrated rapidly after the drug is taken; as a result, the blood concentration is capable of quickly reaching the therapeutic window range; the slow-release layer is slowly released so that the therapeutic action is maintained for a long period of time and toxic and side effects are effectively controlled.
Owner:OVERSEAS PHARMA
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