Hariharan M, Wheatley TA, and Price JC's Study of Controlled Release

Aspirin, Caffeine and Salicylamide were extracted from an over-the-counter pain reliever (BC Powder). These components were separated by manipulating their solubilities by adjusting the acidity and basicity of the solution. By doing this, the three components were forced into conjugate acid (or base) forms, causing selective solubility in either an aqueous or organic solvent. These layers were then separated by use of a separation funnel. Once separated, the components extracted were characterized by measuring the melting point and performing a TLC analysis. Also, the recovered aspirin from the first part of the experiment was recrystallized and compared to that of the

Capsule is the most versatile of all dosage forms. Capsules are solid dosage forms in which one or more medicinal and inert ingredients are enclosed in a small shell or container usually made of gelatin. There are two types of capsules, “hard” and “soft”. The hard capsule is also called “two piece” as it consists of two pieces in the form of small cylinders closed at one end, the shorter piece is called the “cap” which fits over the open end of the longer piece, called the “body”. The soft gelatin capsule is also called as “one piece”. Capsules are available in many sizes to provide dosing flexibility. Unpleasant drug tastes and odors can be masked by the tasteless gelatin shell. The administration of liquid and solid drugs enclosed in hard

The antacid tablets were not crushed properly, resulting in big crumbs of the tablet which will affect the dissolving process of the lab.

Manufacturing theophylline formulations come with challenges for both the anhydrous and hydrate. For the anhydrous form, a study showed that the wet granulation of theophylline anhydrous in conjunction with microcrystalline cellulose, led to the formation of the monohydrate form of the drug. This is significant because the monohydrate has slower dissolution than the anhydrous form of theophylline. Thus the method of manufacture is highly important as the study showed directly compressed pellets had better dissolution profiles. Also it shows the importance of the choice of excipients as pellets manufactured via wet granulation in the absence of microcrystalline cellulose showed similar release to that of directly anhydrous theophylline.

The hypothesis was formed under the thought that the fastest dissolving pill would be the most effective because the sooner the ingredients and materials were realized, the sooner they would be able to attack and neutralize the pain, therefore getting the job done quicker or more efficiently. The hypothesis was not supported because, overall, the first two pills to dissolve were both children’s pain killers and were “junior strength”. Therefore, these medicines could not have been the most effective because the strength is significantly weakened to accommodate to young kids, and would not be as effective as normal strength medicines. In order to accurately determine the time taken for the pills to dissolve inside the body, it is very important to create a solution similar to stomach acid. Stomach acid was simulated by heating vinegar, which has the same ph level of stomach acid and shares other similarities in makeup and properties. The vinegar was heated to 36.7 degrees Celsius and constantly stirred to represent the temperature and motion of stomach acid. Eight different pills were timed to see how fast they dissolved. Each type of pill was tested three times in order to find an average for each medicine. The pills tested were Advil, Children’s Advil Grape Flavored, Ibuprofen, Children's Ibuprofen Grape Flavored, Tylenol, Tylenol Liquid Gels, Aleve, and Aleve Liquid Gels. The children's strength pills were the first two medicines to dissolve. Aleve was the slowest to dissolve and took almost two hours to dissolve. The liquid gel capsules were the second and third slowest pills to dissolve. In order, from fastest to slowest to dissolve, the medicines were Children's Ibuprofen Grape Flavored, Children’s Advil

In the experiment, I predict that the acetaminophen liquid soft gel capsules will take the longest to dissolve in the simulation gastric acid. The capsules will be the second most effective based on its reaction to the simulation gastric acid. Lastly the liquid form will completely dissolve, therefore being the least effective.

What if the density of the pill affects the dissolving time in the hydrochloric acid? During this experiment, this question will be answered. The denser the pill, then the longer dissolving rate when time is a function of the dissolving rate. Tablets, coated tablets, gel capsules, and hard capsules will be tested, and all of these each have a different densities.

Please list the patients Priority Population (Pregnant Women, Pregnant Women with Children, IV Drug User, Veteran, and Literally Homeless (Living in the woods) :

Wordell also explained that sustained release tablets have two important advantages over other drugs, one “they are effective for a longer period of time” and “two they frequently cause fewer adverse reactions.” Since sustained release tablets are designed to release the drug slowly over time, crushing or damaging the “wax matrix” may cause the patient to “receive too much of the drug too soon” and the patient “may suffer increased adverse reactions” as explained by Wordell. The expected effect of the drug may also not be met and the symptoms may reoccur before the next schedule dose Wordell further expressed. Sustained released capsule “contains beads” that releases the drugs in the same process as that of sustained release tablets. While you may be able to open a sustained release capsule and mixing the “beads” which food or juice, you must be very carefully and ensure that the beads or not popped during mixing Wordell emphasized. This will also cause the patient to receive too much of the drug at a much faster rate and this will also cause very serious adverse

For this experiment the analgesic tablet and ethanol mixture was already made prior to lab, so that was not done. The eluent was poured into the beakers and covered to allow he air to also get saturated, and to ensure none evaporated. The TLC plates were label

Many molecules, particularly peptides and polypeptides are physically embedded in polymers to create a complex network of interconnecting pores through which the drug could subsequently diffuse. The pore structure and polymer composition is controlled in order to design systems that release the drug at nearly any rate and for nearly

Controlled substances, including methamphetamine, marijuana, cocaine and other drugs, are illegal in the state of Texas. The penalties for possessing such substances can be serious, with life changing effects. When people stand accused of manufacturing these drugs, however, the potential consequences are even more severe.

Using a mortar and pestle, the weighted tablets are crushed manually and turned into homogeneous powder. Ground material is transferred to a 250 cm3 glass beaker with 200cm3 of deionized water in it. The solution is stirred with glass rod. This solution is transferred to a 250cm3 conical flask that had been previously washed with deionized water.

Slow release: Enteric coated tablets are non crush, they are known as sustained-release tablets, which can be composed of

Different mobile phases were tried using various proportions of different phases and organic modifiers. Methanol and acetonitrile were tried as organic modifiers and different potassium hydrogen phosphate buffer strengths were tried (0.025 and 0.0075M). Metformin and Dapagliflozin exhibit UV absorption mainly at 234 nm.The resolution of standard Dapagliflozin and Metformin in the presence of degradation products was satisfactory. Ultimately, a mobile phase consisted of 0.1M orthophosphoric acid:Acetonitrile (35:65 v/v). was selected for validation purposes and stability studies.Optimized standard chromatogram for Metformin and Dapagliflozin is shown in figure