The mixed salt according to the invention is not only surprisingly easily formed and crystallised it also considerably improves the solubility of naproxen. Also this association of the two active principles into the same salt exhibits several further advantages. Both tramadol and naproxen being active.
Different formulations have been designed to combine these two active principles, and due to its particular interest, it remains necessary to make new forms of this association available.
In another aspect, the present invention concerns a process for the manufacture of tramadol-naproxen salts. This process comprises the step of :.
The crystalline form of (S,S)-tramadol-(R)-naproxene salt according to the present invention is characterized in that the endothermic sharp peak corresponding to the melting point has an onset at 128 °C, measured by DSC analysis (10°C/min), see figure 10.
d- Value (A) Angle (2-Theta)1 Relative Intensity % 10,51929 8,399 4,0 10,05203 8,790 20,4 8,10639 10,905 100,0 7,88393 11,214 18,1 6,70564 13,193 2,5 6,35529 13,923 21,3 5,96969 14,828 24,8.
Drugs with high lipid solubility, high unionised fraction or low protein binding in the plasma, demonstrate large volumes of distribution. Most opioids are. However, tramadol shares most of the common side effects of other opioids (e.g. vomiting, drowsiness and ambulatory dizziness). Tramadol is.
Fentanyl has been used to augment effects of local anaesthetics in spinal and epidural analgesia at 10-25 microgram and 25-100 microgram doses respectively. Such doses are used intravenously for pain associated with minor surgery. In small doses it has little sedative effect. When given in small doses (1-2 microgram/kg), it has rapid onset and short duration of action (30 minutes). Dose: It is available as colourless solution for injection in 2 and 10 ml ampoules containing 50 microgram per ml. Fentanyl is also available as transdermal patch for chronic pain conditions and as lollipop to premedicate children.
Slow release of tramadol hydrochloride from cocoa butter base was due to high lipophylicity of the base, high water solubility of tramadol hydrochloride, non-miscibility of the base with the dissolution media, absence of additives or surface-active agents. A matrix network structure has been formed during the preparation of.
HPMC: Hydroypropolymethylcellulose, PVP: Polyvinylpyrolidine, PEG: Polyethyleneglycol.
*Average of three determinants, - Poor, + Fair, ++ Good.
Roshan. Saleem *, M. M. Humaira and S. Sanaullah, M. Taher, S. Najmuddin, Javed ali 1, S. A.
The molten mass was poured into previously calibrated stainless steel mould of 1g and allowed to set. Cocoa butter suppositories were prepared by melting cocoa butter and bees wax on water bath, and then the drug was incorporated. Agar suppositories were prepared by molding method, dissolving methyl and propyl paraben in hot water and then drug along with other additives like propylene glycol, HPMC, PVP was added and mixed well.
The aim of the current study was to formulate elementary osmotic pump tablets of water soluble Tramadol HCl. Formulation were prepared based on wet granulation method, coated with cellulose acetate solution containing varying amount of Dibutylphthalate (DBP), and Polyethylene glycol 400 (PEG-400). Drug release.
Optimization results indicated that to a certain extent drug release was less effected by the orifice size, concentration of coating solution and coating weight. The excipients of physio-chemical property of the drug were determined by DSC (Differential scanning calorimetry). The optimized formulation was subjected to accelerated stability testing as per ICH guidelines. The aim of the current study was to formulate elementary osmotic pump tablets of water soluble Tramadol HCl. Osmotic drug delivery system utilize osmotic pressure as a energy source and driving force for delivery of drugs, pH presence of food under physiological factors may affect drug release from conventional controlled release system (Matrices and reservoirs), where as drug release from osmotic system is independent of these factors to a large extent. The results confirmed that the factors responsible for drug release were osmotic agents (core) and orifice size membrane. Drug release from the osmotic drug delivery system was studied using USP Type I Paddle type apparatus. DSC showed the excipients used in the formulation did not alter physicochemical properties of the drug. Formulation were prepared based on wet granulation method, coated with cellulose acetate solution containing varying amount of Dibutylphthalate (DBP), and Polyethylene glycol 400 (PEG-400).
All Published work is licensed under a Creative Commons Attribution 4.0 International License 2017. iMedPub Last revised : December 23, 2017.
Its easier operational conditions,24,25 was attempted. A preliminary solubility study showed that tramadol·HCl (1) was soluble in water, dimethyl sulfoxide, alcohols, and chlorinated solvents, while celecoxib. (2) was insoluble in water and soluble in many organic solvents except the most apolar ones.