Design And Manufacture Of Pharmaceutical Tablets Pdf

design and manufacture of pharmaceutical tablets pdf

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The design and manufacture of pharmaceutical tablets is a complex multi-stage process whereby formulation scientists ensure that the correct amount of drug substance in the right form is delivered at the appropriate time, at the proper rate and in the desired location with its chemical integrity protected to that point. Most drug substances do not possess the required properties which give satisfactory flow from the hopper to the die cavity of tablet presses.

Tablet (pharmacy)

The design and manufacture of pharmaceutical tablets is a complex multi-stage process whereby formulation scientists ensure that the correct amount of drug substance in the right form is delivered at the appropriate time, at the proper rate and in the desired location with its chemical integrity protected to that point.

Most drug substances do not possess the required properties which give satisfactory flow from the hopper to the die cavity of tablet presses. As a result, they are subjected to pre-treatment either alone or in combination with suitable excipients to form free-flowing granules that lend themselves to tabletting. Tablets are commonly manufactured by wet granulation , dry granulation or direct compression.

These methods may be considered to consist of a series of steps unit processes — weighing, milling, mixing, granulation, drying, compaction, frequently coating and packaging. Regardless of the method used the unit processes — weighing, milling and mixing, are the same; subsequent steps differ.

In general, the choice of formulation process employed during tablet manufacture is dependent upon such factors as:. Tablets in addition to the therapeutic agent s also contain excipients that are required to ensure satisfactory production process.

These materials which are inert may be added to the drug substance to increase its bulk and give those desirable properties lacking in the drug substance alone. Depending on the intended use, tablet excipients may be subcategorized into:. Many excipients used in tablet formulation are multi-functional that is, they may serve more than one function and thus can affect the properties of powders or tablets in various ways at varying concentrations. All excipients used in tablet formulation may not be present in all tablet formula.

Some such as lactose, stearates, microcrystalline cellulose are common to the vast majority of tablets. Excipients used in tablet formulations include binders or granulating fluid, diluents, disintegrants, lubricants, glidants, colourants, sweeteners, flavourants, adsorbents, and surfactants.

Read Also: Excipients used in tablet formulation. Quality control of tablet raw materials APIs and excipients is one of the main tasks of the quality control unit in any drug manufacturing industry. Raw materials described in monograph of relevant Pharmacopoeia must undergo the necessary tests as stated in the monograph. Every manufacturer has the opportunity to carry out further testing if they deem it necessary for guaranteeing a smooth-running production process or a very high-quality product.

Starting materials are released only after their quality are established or judged as satisfactory. Raw materials that fail the quality control test are rejected and returned to the supplier. Any risks that may emanate from starting materials of inappropriate quality must be avoided to prevent product failure and to ensure a consistent level of quality, as well as safety in consumer and industrial products.

Tablet Manufacturing Equipment continues to improve in both production speed and uniformity of the tablets compressed. Some of the steps above are skipped depending on the manufacturing process used during tablet formulation. One important requirement is that the drug mixture flows freely from the hopper of the tabletting machine into the dies to enable high-speed compression of the powder mix into tablets.

Wet granulation is a widely used method for the production of compressed tablet. It is essentially a process of size enlargement involving several steps and the use of an adhesive substance known as binder. The granules produced using this method of granulation has a greater probability of meeting all the physical requirements for tablet formation.

A stepwise summary of the manufacturing steps used in the manufacture of tablets by the wet granulation method are listed below. Tablets manufactured by wet granulation exhibit sufficient mechanical properties to be subsequently exposed to other unit operations, e. Read: Manufacture of tablets by wet granulation method. The formation of granules by compacting powder mixtures into large pieces or compacts which are subsequently broken down or sized into granules often referred to as dry granulation, double compression or pre-compression is a possible granulation method which, however, is not widely used in the manufacture of tablets.

This method is used when tablet excipients have sufficient inherent binding properties. The procedure can also be used as a means to avoid exposure of drug substances to elevated temperatures during drying or moisture. Double compression method eliminates a number of steps but still includes weighing, mixing, slugging, dry screening, lubrication, and compression of granules into tablets. Compaction for the dry granulation process is generally achieved either by slugging or roller compaction.

In this method, the powder mix is compressed into a soft large flat tablet about 1 inch in diameter using a tablet press that is capable of applying high stress. Following this, the slugs are broken by hand or milled using conventional milling equipment to produce granules of the required size.

Lubricant is added in the usual manner, and the granules then compressed into tablets. Aspirin is a good example of where slugging is satisfactory. Other materials, such as aspirin combinations, acetaminophen, thiamine hydrochloride, ascorbic acid, magnesium hydroxide, and other antacid compounds, may be treated similarly.

Results similar to those accomplished by the slugging process are also obtained with powder compactors. In roller compaction method, the formulation ingredients are mixed and are passed between high-pressure oppositely rotating rollers that compress the powder at 1 to 6 tons of pressure.

The compacted material is then milled to a uniform granule size and compressed into tablets after the addition of a lubricant. The roller compaction method is often preferred to slugging.

Excessive pressures that may be required to obtain cohesion of certain materials may result in a prolonged dissolution rate. Read: Manufacture of tablets by dry granulation method. A stepwise summary of the manufacturing steps used in the manufacture of tablets by the dry granulation method are listed below. As its name implies, direct compression involves direct compression of powdered materials into tablets without modifying the physical nature of the materials itself.

The technology involved in this method assumes great importance in the tablet formulations, because it is often the cheapest means, particularly in the production of generics that the active substance permits. Direct compression avoids many of the problems associated with wet and dry granulations. Its successful application in tablet formulation rests on two fundamental issues:. It is worth noting that tablets produced by direct compression are often softer than their counterparts that have been produced by wet granulation and therefore they may be difficult to film-coat.

Read: Manufacture of tablets by direct compression method. Tablets should be subjected to a number of tests before they are deemed fit for marketing and consumption. These tests can be divided into two broad categories namely. Before tablets are sent out for distribution, they are usually packaged using appropriate packaging materials. The type of packaging material used is a matter of choice and is dependent on several factors including:.

Tablets are commonly packaged using blister and strip packs and are kept in places of low humidity, and protected from extremes temperature. The packaging provides excellent environmental protection for each unit of tablet, coupled with an aesthetically pleasing and efficacious appearance. Blister and strip packaging also provide some degree of tamper resistance to the dosage form. For larger quantities delivered to the pharmacist, glass or plastic bottles, metal containers, cartons, or paperboard drums may be used along with polyethylene liners, where necessary, to give added protection from moisture.

If cotton wool stuffing is used under these circumstances it is an advantage for it to be external to the liners so that any moisture that it contains does not gain access to the tablets.

Tablets that are decomposed when exposed to moisture can also be packaged with a desiccant packet. Light sensitive tablets are packaged in light-resistant containers. With a few exceptions, tablets that are properly stored will remain stable for many years. The title of this article is Manufacture of Pharmaceutical Tablets.

This article;Manufacture of Pharmaceutical Tablets gives an overview of tablet formulation processes.. Related keywords: Manufacture of Pharmaceutical Tablets, tablet manufacturing process slideshare, basics of tablet manufacturing, tablet manufacturing process pdf, manufacturing of tablets and capsules, tablet manufacturing equipment pdf, tablet formulation, tablet capsule manufacturing process, pharmaceutical tablet size chart.

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Manufacture of Pharmaceutical Tablets by Pharmapproach. September 7, Share on Facebook Share on Twitter. Contents 1 Primary goals of tablet manufacturing process 2 Factors that influence the choice of manufacturing process used during tablet formulation 3 Personnel requirements during manufacture of pharmaceutical tablets 4 Area required for manufacture of tablets 4.

Tags: Tablets. Related Posts. Pharmaceutical Technology. Types of Emulsions January 4, Advantages and Disadvantages of Pharmaceutical Emulsions December 18, Comments 8 Vincent Harville says:. Thank You for your continued commitment to the profession. Cordially, Vincent. Pharmapproach says:. Ebraime Kalisto says:. Continue help us through your writings. Presented very nicely. Thank you for the excellent presentation.

Leave a Reply Cancel reply Your email address will not be published. Post Flash. List of Pharmaceutical Companies in Philippines. Tablet Coating Process: Film Coating. Rheologic Considerations for Pharmaceutical Suspensions.

Design and Manufacture of Pharmaceutical Tablets

Here are several in-depth and insightful articles about the manufacturing process, tooling, formulation, and training. Please contact us if you have any questions or comments. Thank you! Many options are available for punches and dies to help compress difficult drug products. One commonly overlooked punch modification, the extended head flat, increases the diameter of the flat area atop the punch head.

A tablet is a pharmaceutical oral dosage form oral solid dosage , or OSD or solid unit dosage form. Tablets may be defined as the solid unit dosage form of medicament or medicaments with suitable excipients. It comprises a mixture of active substances and excipients, usually in powder form, pressed or compacted from a powder into a solid dose. Tablets are prepared either by molding or by compression. The excipients can include diluents , binders or granulating agents, glidants flow aids and lubricants to ensure efficient tabletting; disintegrants to promote tablet break-up in the digestive tract; sweeteners or flavours to enhance taste; and pigments to make the tablets visually attractive or aid in visual identification of an unknown tablet. A polymer coating is often applied to make the tablet smoother and easier to swallow, to control the release rate of the active ingredient, to make it more resistant to the environment extending its shelf life , or to enhance the tablet's appearance.


In addition, this book offers a a general discussion of excipients used in proper tablet design along with practical examples related to excipients. Drug development.


Particles and Nanoparticles in Pharmaceutical Products

Design and Manufacture of Pharmaceutical Tablets offers real world solutions and outcomes of formulation and processing challenges of pharmaceutical tablets. This book includes numerous practical examples related to actual formulations that have been validated and marketed and covers important data in the areas of stability, dissolution, bioavailibity and processing. It provides important background and theoretical information on design and manufacturing and includes a full section dedicated to design experimental methodology and statistics. In addition, this book offers a a general discussion of excipients used in proper tablet design along with practical examples related to excipients.

The pharmaceutical tablet manufacturing process PTMP via wet granulation holds a critical position in pharmaceutical industry. The interest in integrating mechanistic process modeling into the pharmaceutical development has been increased because simulation model is a prerequisite for process design, analysis, control, and optimization. So the simulation modeling for PTMP via wet granulation is very necessary and significant. This study aims at proposing a simulation modeling framework for PTMP via spray fluidized bed granulation SFBG , which is one of the most widely used wet granulation techniques in pharmaceutical industry. For SFBG, a simulation model that simultaneously involves the influences of operating variables and material attributes on average particle size APS is firstly developed, and then a drying model to determine the particle moisture content is introduced to be coupled with the established model predicting APS.

The manufacturing of effervescents

Pharma Times Tablet Formulation Design And Manufacture: Oral Immediate Release Application

However, the manufacturing process involves some critical steps that need to be addressed carefully during formulation and factory design. Oral dosage forms are still the most popular way of taking medication, despite having some disadvantages compared with other methods. One such disadvantage is the risk of slow absorption of the active pharmaceutical ingredient API , which can be overcome by administering the drug in liquid form and, therefore, possibly allowing the use of a lower dosage. Liquid dosage forms also benefit from higher levels of patient compliance, especially pleasant-tasting ones, and overcome any potential issues with dysphagia in geriatric and pediatric populations. However, because many APIs only show a limited level of stability in liquid form, effervescent tablets, which are dissolved in water before administration, have been formulated as an alternative dosage form. The disadvantages of effervescent dosage forms are the need for larger tablets, a complex production process and, very often, the need for specialist packaging materials.

It seems that you're in Germany. We have a dedicated site for Germany. Editors: Merkus , Henk G. This edited volume brings together the expertise of numerous specialists on the topic of particles — their physical, chemical, pharmacological and toxicological characteristics — when they are a component of pharmaceutical products and formulations. The book discusses in detail properties such as the composition, size, shape, surface properties and porosity of particles with respect to how they impact the formulations and products in which they are used and the effective delivery of pharmaceutical active ingredients.

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Impurity testing, good manufacturing practices, and dissolution tests still lay in the future, more than a decade away. Today, the majority of pharmaceutical tablets.

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Abstract Tablet is the most preferred oral dosage form, due to many advantages it offers to formulators as well as physicians and patients.

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