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The science of controlled release developed further with more oral sustained-release products in the late 1940s and early 1950s, the development of controlled release of marine anti-foulants in the 1950s, and controlled release fertilizer in the 1970s where sustained and controlled delivery of nutrients was achieved following a single ...
These coatings were used on drugs delivered to the stomach, so that they would protonate and dissolve at low pH to release drug. [4] The development of stimuli-responsive drug carriers was not popularized until the mid-1980s by researchers at Utah University, who created thermally-responsive drug delivery systems. [ 4 ]
Merck & Co. later developed the Controlled-Porosity Osmotic Pump (CPOP) with the intention of addressing some of the issues that led to Osmosin's withdrawal via a new approach to the final stage of the release mechanism. [1] Unlike the EOP, the CPOP had no pre-formed hole in the outer shell for the drug to be expelled out of.
[7] [12] [13] HYVET study showed that indapamide (sustained release), with or without perindopril as antihypertensive treatment in persons 80 years of age or older with sustained systolic blood pressure of 160 mmHg or higher, demonstrated significant reduction in all-cause mortality when treated to a target of 150/80 mmHg, but there was found ...
Chlorthalidone is the thiazide drug that is most strongly supported by the evidence as providing a mortality benefit; in the ALLHAT study, a chlorthalidone dose of 12.5 mg was used, with titration up to 25 mg for those subjects who did not achieve blood pressure control at 12.5 mg. Chlorthalidone has repeatedly been found to have a stronger ...
Since beta blockers are known to relax the cardiac muscle and constrict the smooth muscle, beta-adrenergic antagonists, including propranolol, have an additive effect with other drugs that decrease blood pressure or decrease cardiac contractility or conductivity. Clinically significant interactions particularly occur with: [35] Verapamil
The large surface area also has a large affinity for drugs and small molecules, like ligands or antibodies, for targeting and controlled release purposes. Nanoparticles refer to a large family of materials both organic and inorganic. Each material has uniquely tunable properties and thus can be selectively designed for specific applications.
Metadate CD capsules contain two types of beads: 30% are immediate-release, and the other 70% are evenly sustained release. [187] Medikinet Retard/CR/Adult/Modified Release tablets are an extended-release oral capsule form of methylphenidate. It delivers 50% of the dosage as IR MPH and the remaining 50% in 3–4 hours. [188] [189]
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