scholarly journals Comparison of Tablet Splitting Techniques for Dosing Accuracy of Nebivolol Tablets: Hand Splitting versus Tablet Cutter and Knife

Author(s):  
Seval Olgac ◽  
Duygu Yilmaz Usta ◽  
Tuba Incecayir
2008 ◽  
Vol 8 (4) ◽  
pp. 391-395 ◽  
Author(s):  
Edina Vranić ◽  
Alija Uzunović

Tablets are one of the most popular and preferred solid dosage forms because they can be accurately dosed, easily manufactured and packaged on a large scale, have good physical and chemical stability, and can contribute to good patient compliance given their ease of administration. The ability to match doses to patients depends on the availability of multiple dose sizes and adequate dose-response information. These are not always provided, so splitting of the tablets is sometimes necessary, Tablet splitting is an accepted practice in dispensing medication, It has been used when a dosage form of the required strength is not available commercially. The aim of our study was to compare some physical parameters of whole and scored lisinopril and lisinopril/hydrochlorthiazide tablets and to accept or exclude their influence on the obtaining of required dosage.According to the results obtained, we may conclude that tablets from batch “I” “IL “III” and “IV” satisfied pharmacopeial requirements concerning crushing strength, friability, disintegration time and mass uniformity. The hardness testing showed acceptable reproducibility and indicate that the data variation was primarily from the irreversible changes in the structure of tablet samples. The act of compacting powders stores energy within the tablets, by shifting or compressing the intermolecular bonds within the particles. The tablets have a natural tendency to relax once pressure is removed, and this tendency works against the interparticle bonding formed during compression. Hardness testing procedure causes irreversible changes in this structure.


2010 ◽  
Vol 401 (1-2) ◽  
pp. 25-31 ◽  
Author(s):  
Na Zhao ◽  
Ahmed Zidan ◽  
Mobin Tawakkul ◽  
Vilayat A. Sayeed ◽  
Mansoor Khan

Author(s):  
S. Yu. Bulatov ◽  
V. N. Nechaev ◽  
A. G. Sergeev

Feed production, feeding of animals and poultry is an integral part of animal husbandry and poultry farming. Proper feeding of animals and poultry, which implies the making of an optimal diet with the input of useful premixes and vitamins, can increase their productivity. In Russia the predominant type of feeding is complete feed, which includes compound feed. Regardless of the type of feed in the process of its production, it is necessary to observe the proportions of its components. Dispensers are used for dosing, which depending on the purpose, are divided into mass and volume. We have made an attempt to generalize, systematize and implement the accumulated experience in the form of a scheme that allows us to understand the principle of operation of modern systems for dosing feed components, in which augers are used as feeding mechanisms. The purpose of the research was to build a scheme for selecting parameters and develop a methodology for studying the dosage system of feed components based on it. The results of the analysis of intellectual property protection documents and scientifi c works in the fi eld of dosing have been used to make a scheme for selecting parameters of the feed components dosing system. The results of observations on the operation of the developed system under production conditions and design features have been also taken into account. As a result of the research developed the scheme of selection of the operating parameters of the dosing system, revealed its shortcomings in the form of lower dosing accuracy with the decrease in the mass of the weighed components and the long search settings when composing the new diet. The methods have been developed to address the identifi ed defi ciencies in the determination of limit values of technological parameters.


2019 ◽  
Vol 104 (6) ◽  
pp. e62.2-e62
Author(s):  
J Zahn ◽  
W Rascher ◽  
A Neubert

BackgroundPharmacotherapy in children is complex requiring individual dosages of an active substance which are often not compatible with commercially available medicinal products.1–2 Manipulations of medicinal products, e.g. splitting or mortaring of tablets are common practice and often unavoidable although they entail risks for the patient as they can affect dosing accuracy, bioavailability and integrity of the dosage form.3–4In this study we aim to determine how many medicines have to be manipulated before administration in a hospital setting in Germany.MethodsA prospective observational approach was used to determine all manipulations of drugs orally administered on two wards of a German children´s hospital. A pharmacist systematically observed the nurses and documented all steps of the medication preparation processes for 7 days. Data was analysed using descriptive analysis. Types of manipulations were evaluated on the basis of the relevant summary of product characteristics (SmPC).ResultsDuring the pilot phase 170 medication preparation processes were monitored. In 36,5% (n=62) of the observed processes medicines had to be manipulated. 54,3% (n=19) of the patients were affected by at least one manipulation. 48,4% (n=30) of all manipulations were unauthorized by the relevant SmPC affecting 37,1% of the patients. In 60,0% the reason for unauthorized manipulation was unsuitable strength of the available formulation. Dosage forms affected by unauthorized manipulations were tablets (n=28) and granules (n=2). Active substances most frequently involved in unauthorized manipulations were Omeprazole (n=11), Phenobarbital (n=7) and Topiramat (n=3).ConclusionOverall, these results reveal that manipulations to medicines prior to administration are frequent on paediatric wards in Germany. About half of the manipulations are unauthorized indicating that no suitable paediatric formulation is available. Further investigation is needed to determine the preventability and the risks associated with the overall aim of improving safety of drug therapy in children.ReferencesSchirm E, Tobi H, de Vries TW, Choonara I, De Jong-van den Berg LT. Lack of appropriate formulations of medicines for children in the community. Acta paediatrica(Oslo, Norway:1992) 2003;92(12):1486–9.Richey RH, Craig JV, Shah UU, Nunn AJ, Turner MA, Barker CE, et al. MODRIC - Manipulation of drugs in children. International journal of pharmaceutics. 2013;457(1):339–41.Bjerknes K, Boyum S, Kristensen S, Brustugun J, Wang S. Manipulating tablets and capsules given to hospitalised children in Norway is common practice. Acta paediatrica(Oslo, Norway: 1992) 2017;106(3):503–8.Paparella S. Identified safety risks with splitting and crushing oral medications. Journal of emergency nursing: JEN: official publication of the Emergency Department Nurses Association 2010;36(2):156–8.Disclosure(s)Nothing to disclose


2019 ◽  
Vol 9 (15) ◽  
pp. 3066 ◽  
Author(s):  
Emmanuel Reginald Jacques ◽  
Paschalis Alexandridis

Oral solid dosage formulations and/or tablets have remained the preferred route of administration by both patients and health care practitioners. Oral tablets are easy to administer, they are non-invasive and cause less risk adversity. Because of the lack of commercially available tablet dose options, tablets are being split or partitioned by users. Tablet scoring refers to the breakage of a tablet to attain a desired efficacy dose and is an emerging concept in the pharmaceutical industry. The primary reason for the tablet scoring practice is to adjust the dose: dose tapering or dose titrating. Other reasons for tablet partitioning are to facilitate dose administration, particularly among the pediatric and the geriatric patient population, and to mitigating the high cost of prescription drugs. The scope of this review is to: (1) evaluate the advantages and inconveniences associated with tablet scoring/portioning, and (2) identify factors in the formulation and the manufacturing of tablets that influence tablet splitting. Whereas tablet partitioning has been a common practice, there is a lack of understanding regarding the fundamentals underpinning the performance of tablets with respect to splitting. Several factors can influence tablet partitioning: tablet size, shape, and thickness. A requirement has recently been set by the European Pharmacopoeia and the U.S. Food and Drug Administration for the uniformity of mass of subdivided tablets. For breaking ease, an in-vivo reference test and a routinely applicable in-vitro test need to be established.


2021 ◽  
pp. 511-520
Author(s):  
Irma Mureškić ◽  
Božana Jevđenić ◽  
Kanita Muhamedagić ◽  
Anđelka Račić ◽  
Biljana Gatarić ◽  
...  

2012 ◽  
Vol 14 (9) ◽  
pp. 804-809 ◽  
Author(s):  
Meike Krzywon ◽  
Thomas van der Burg ◽  
Uwe Fuhr ◽  
Manfred Schubert-Zsilavecz ◽  
Mona Abdel-Tawab
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