A structure former, usually mannitol chosen for its high compatibility and its well-known documented properties - is also added. The graph in Figure 1 shows a comparison between 10mg doses of selegeline in both traditional tablet and ODT formats, and a 1.25mg Zydis ODT. Prescription ODT products initially were developed to overcome the difficulty in swallowing conventional tablets with water among pediatric, geriatric, and psychiatric patients with dysphagia. The result is a fast-disintegrating tablet that has adequate hardness for packaging in bottles and easy handling. Technol. This can either contain two different APIs, or an API and a necessary excipient that is otherwise incompatible. 34. No liquid is required when taking the medication either, which is a significant advantage when on the go. In the most effective vaccine formulation, there was very little change in body weight across the period of monitoring. Drug loading for water-insoluble drugs approaches 400 mg, and the upper limit for water-soluble drugs is ~60 mg. Iles et al., "Freeze-Dried Dosage Forms and Methods for Preparing the Same," US Patent 5,188,825 (1993). D. Brown, "Orally Disintegrating Tablets: Taste Over Speed," Drug Deliv. The fibers produced are usually amorphous in nature and are partially recrystallized, which results in a free-flowing floss (20). Pre-gastric absorption can have significant advantages in terms of both a faster onset of action and the reduction of side-effects. (CRC Press, New York, NY, 2005), pp. The freeze drying process then proceeds as normal, followed by packaging. Ghosh, "Intraoral Delivery Systems: An Overview, Current Status and Future Trends," in Drug Delivery to the Oral Cavity: Molecules to Market, T.K. No official support or endorsement of this article by FDA is intended or should be inferred. Furthermore, if the drug is absorbed within the oral cavity rather than being digested, it avoids the first pass of the liver. N. Sharma et al., "Manufacturing Technology Choices for Mouth Dissolving Tablets," Pharm. G.L. The required end-point for reaction termination is determined by measuring carbon dioxide evolution.

Water-soluble drugs pose various formulation challenges because they form eutectic mixtures, which result in freezing-point depression and the formation of a glassy solid that may collapse upon drying because of the loss of supporting structure during the sublimation process (8, 30). Our Swindon, U.K. facility is dedicated to Zydis unit production. The blisters containing the dried Zydis units are then sealed via a heat-seal process to protect the product from varying environmental conditions and ensure long-term stability. By using this website you understand and accept that Catalent tracks your website activities to be able to offer you a more tailored response or information to meet your requirements, and that your personal data will be held in accordance with our, Copyright 2022, Catalent, Inc - All Rights Reserved, Copyright 2020, Catalent, Inc - All Rights Reserved, Better pregastric absorption for certain drug compounds, Anti-psychotic (Parkinsons disease, schizophrenia), Embossing with corporate logos and product codes, Unique packaging, including child-resistant options, Taste masking and flavors formulated for specific markets, including pediatrics and veterinary medicine, Functional coating for controlled / sustained release applications, Potential interaction with other constituents of GI fluids, Use of bio-adhesives / absorption enhancers, Pre-gastric delivery (e.g. Ghosh and W.R. Pfister, Eds. The freeze-drying process involves the removal of water (by sublimation upon freeze drying) from the liquid mixture of drug, matrix former, and other excipients filled into preformed blister pockets. Despite these advantages, the application of this technology is limited by the amount of drug that can be incorporated into each unit dose. An ODT is a solid dosage form that disintegrates and dissolves in the mouth (either on or beneath the tongue or in the buccal cavity) without water within 60 seconds or less. Quick-dissolve tablets can offer several biopharmaceutical advantages such as improved efficiency over conventional dosage forms. The DuraSolv ODT technology is a second-generation technique based on the OraSolv technology. Technol. Through expert analysis and interpretation of data, our Zydisfast dissolve technology team will fully characterize your API and associated Zydisformulations throughout the development process to provide a robust data package in support of regulatory filings. A disadvantage of the wafers is that they are lightweight, fragile products and therefore must be dispensed in a special blister pack with a peelable backing foil (33). R.P. Such collapse sometimes can be prevented by using various matrix-forming excipients such as mannitol that can induce crystallinity and hence, impart rigidity into the amorphous composite. Particles as small as 100m can be coated, significantly smaller than the 200400 m particles that conventional coating is successful for. More recently, the Zydis Ultra formulation has been developed, which incorporates coated APIs for taste-masking purposes. These products usually degrade rapidly in the stomach. It is also possible to create ODTs from emulsions rather than suspensions or solutions of APIs. very bitter or otherwise unacceptable taste because taste masking cannot be achieved. The tablet quickly disintegrates because effervescent carbon dioxide is produced upon contact with moisture. Pharmacol. In many cases, if a residual taste is only moderately unpleasant for patients, including flavor ingredients and sweeteners in the formulation can be sufficient to overcome this. 5 (1), 3437 (2005). 261290. J. Aurora and V. Pathak, "Oral Disintegrating Technologies: Oral Disintegrating Dosage Forms: An Overview," Drug Deliv. Because drugs delivered in ODTs may be absorbed in the pregastric sites of highly permeable buccal and mucosal tissues of the oral cavity, they may be suitable for delivering relatively low-molecular weight and highly permeable drugs. For example, several techniques for making compressed tablets (e.g., DuraSolv, CIMA Labs, Eden Prairie, MN; OraSolv, CIMA Labs; and WOWTAB, Yamanouchi, Norman, OK) produce tablets that are easy to handle and can be packaged in blister packs or bottles. The administration of ODTs may not inherently result in a faster therapeutic onset, but it can circumvent problems such as difficulty in swallowing traditional solid oral dosage forms, particularly by pediatric and geriatric patients. K. Deepak, "Orally Disintegrating Tablets," Tablets and Capsules 7 , 3035 (2004). Table II summarizes the main characteristics of various ODT technologies and products from several innovator companies in the oral fast-dissolve tablet arena (15). As an example, a proof-of-concept tablet was created using a 15% w/w emulsion of olive oil in water. Older children may simply not want to take them. R. Fuisz, "Ulcer Prevention Method Using a Melt-Spun Hydrogel," US Patent 5,622,717 (1997). 31. In contrast to normal coating methods, no solvent is required, and the API retains 7085% potency w/w. Characterizes solid-state phrase behavior, Characterization of moisture sorption properties and physical analytical chemistry (HPLC, UV, NIR, FTIR) 27 (11), 92100 (2003). Scherer (now Cardinal Health), personal communication, (2005). S.I. 18. L. Dobetti, "Fast-Melting Tablets: Developments and Technologies," Pharm.

Case Study: Zydis Fast Dissolve Technologies Rapid Onset in the Treatment of Migraine, Ideal for consumer health (OTC), and to mask bitter or strong tasting API. To make the tablets, the excipients are first dissolved or suspended in purified water, and the API added. For example, ODT formulations of selegiline, apomorphine, and buspirone have significantly different pharmacokinetic profiles compared with the same dose administered in a conventional dosage form (1719). M.C. Syst. The wafer can accommodate high drug dosing and disintegrates rapidly but has poor mechanical strength (35). ODTs release drug in the mouth for absorption through local oromucosal tissues and through pregastric (e.g., oral cavity, pharynx, and esophagus), gastric (i.e., stomach), and postgastric (e.g., small and large intestines) segments of the gastrointestinal tract (GIT). The coating is applied via a novel, proprietary method. This article compares various ODT products and technologies and highlights their manufacturing processes, development issues, and future trends for these evolving dosage forms. Fix, "Advances in Quick-Dissolving Tablets Technology Employing WOWTAB," paper presented at the IIR Conference on Drug Delivery Systems, Washington DC, Oct. 1998. Storrs, "Fast-Dissolving Tablets," US Pharm. The liquid is precisely filled into pre-formed blisters and passed through a specially designed cryogenic freezing process to control the ultimate size of the ice crystals. Sastry and J. Nyshasham, "Process Development and Scale-Up of Oral Fast-Dissolving Tablets," in Drug Delivery to the Oral Cavity: Molecules to Market, T.K. Though the appropriate particle size for insoluble drugs is ~50 m, drugs with larger particle sizes also can be formulated into freeze-dried wafers using suspending agents such as gelatin and flocculating agents such as xanthan gum (8, 31). Although it is still early days for ODT formulation of biologics, the model studies already carried out indicate its clear potential. The challenges of oral delivery of proteins & peptides well documented and are not limited to: ZydisBio sub-lingual delivery overcomes these challenges: Benefits of ZydisBio for peptide & protein drugs. Careful selection of formulation options and ingredients, including the selection of the matrix component and the pH, can optimize inprocess stability. 12. P. Kearney and S.K. 5 (3), 5054 (2005). Tapash K. Ghosh is a senior clinical pharmacology and biopharmaceutics reviewer at the US Food and Drug Administration (HFD 880), 9201 Corporate Blvd., Room N224, Rockville, MD 20850. Cherukruri and R. Fuisz, "Process and Apparatus for Making Tablets and Tablets Made Therefrom," European Patent 0,677,147 A2 (1995). E.L. Hamilton and E.M. Luts, "Advanced Orally Disintegrating Tablets Bring Significant Benefits to Patients and Product Life Cycles," Drug Deliv. The target population has expanded to those who want convenient dosing anywhere, anytime, without water. 19. Today, ODTs are more widely available as over-the-counter products for the treatment of allergies and cold and flu symptoms. Technol. partially nonionized at the oral cavity's pH; ability to diffuse and partition into the epithelium of the upper GIT (log. S.R. Technol. The resulting data is used to direct the selection of Zydis formulators and manufacturing process conditions. The European Pharmacopoeia however defines a similar term, orodisperse, as a tablet that can be placed in the mouth where it disperses rapidly before swallowing (2). Sastry, "An Overview of Fast Dispersing Technologies," paper presented at the annual meeting of the AAPS, Oct. 29, 2003. R.H. Bogner, M.F. Technol. In general, an ODT is formulated as a bioequivalent line extension of an existing oral dosage form. As the water is vaporized without going through the liquid state, it does not redissolve the solid ingredients, instead, leaving behind a porous gelatin framework. 23. The basic framework of the Zydis ODT is provided by matrix and structure forming ingredients. 17 , 6172 (2000). The rapid onset of action is of benefit in drugs designed to treat acute conditions, such as migraines and psychiatric incidents, as well as conditions like insomnia. Several drug delivery technologies that can be leveraged on improving drug therapy from ODTs have yet to be fully realized. This would permit very lipophilic APIs to be formulated via dissolution in oil before freeze drying. 25. The lyophilization based manufacturing process and its low temperatures reduces the potential for heat damage to the biologics. The filled trays are passed through a liquid nitrogen freeze channel, causing the API solution or suspension to freeze very rapidly. 41. More than 14 companies worldwide have an ODT platform technology and products in the R&D pipeline or several approved for marketing (10). R. Yarwood, "Zydis: A Novel, Fast Dissolving Dosage Form," Manuf. The impetuses behind developing an ODT include clinical, medical, technical, business, and marketing advantages (see sidebar, "Possible benefits of orally disintegrating tablet drugs") (7, 10, 1316). The floss is mixed with an active ingredient and excipients followed by compression into a tablet that has fast-dissolving characteristics (3743). 15. H. Seager, "Drug Delivery Products and the Zydis Fast-Dissolving Dosage form," J. Pharm. The AUC was almost identical to that for a regular cetirizine tablet. As Figure 4 shows, the ODT made using a standard fluidized bed coating technique is released very rapidly, whereas those using the new LabRAM ResonantAcoustic Mixer technique have a retarded release, which is indicative of tastemasking. William R. Pfister, PhD,* is a senior director of preclinical affairs at NexMed (USA), Inc., (Robbinsville, NJ). WuXi STA Opens a New Large-Scale Continuous Manufacturing Plant, I Saw the Future of Global Pharmaceutical Production in India, TFF Pharmaceuticals Expands R&D Operations with New Facility. 20. The ability through class-leading ZydisODT technology to deliver fast dissolve formulations of large molecule allergens, viral vaccines, and peptides. However, if the API is suitable, then careful ODT formulation can be used to ensure the drug is absorbed in the oral cavity rather than in the gastrointestinal tract. *To whom all correspondence should be addressed. 22. Myers et al.,"Delivery of Controlled-Release Systems," US Patent 5,567,439 (1996). The effervescent excipient (known as effervescence couple) is prepared by coating the organic acid crystals using a stoichiometrically lesser amount of base material. As an example, the drug selegeline is a monoamine oxidase B inhibitor used to treat Parkinsons disease and depression, but its active metabolites include methamphetamine, which leads to side-effects. Technol. With this new process, tablets are made by combining noncompressible fillers with a taste-masking excipient and active ingredient into a dry blend. Characterizes the API crystal form and identifies any changes during formulation and processing, Freeze-drying microscopy

The aluminum packaging provides a high moisture barrier and good environmental protection, and acceptable storage has been demonstrated at room temperature for multiple peptide and protein compounds. If the size of the hole is matched to the API, it can trap the unpleasant tasting active, preventing it from coming into contact with the tongues taste receptors. T.K. 16. By paying close attention to advances in technologies, pharmaceutical companies can take advantage of ODTs for product line extensions or for first-to-market products. 36. By sequentially dosing two separate matrix solutions with different gelling or density characteristics in this way, a single ODT with acceptable quality characteristics can be achieved. More than 35 products have been launched using this technology in more than 60 countries around the world. 29. 33. The tablets are manufactured at a low compression force followed by an optional humidity conditioning treatment to increase tablet hardness (23). Conventional tablet process. This strategy has been successfully applied to the antihistamine cetirizine, which has a very bitter taste. G.L. This vibrates, causing the particles to move and accelerate by as much as 100 times the force of gravity. The particle size of the organic acid crystals is carefully chosen to be larger than the base excipient to ensure uniform coating of the base excipient onto the acid crystals. This review article discusses orally disintegrating tablets and their manufacturing technologies, development issues, and future trends. T.K. Ghosh and W.R. Pfister, Eds. 39. K. Sharma, W.R. Pfister, and T.K. S.V. Submitted: June 17, 2005. Indeed, the site of absorption, the mouth, gives no extreme pH exposure as salivary pH is typically about 6.8, and no relevant proteases are present. J. Chu, "Product Development, Scale-Up and Technology Transfer Aspects of Fast Dispersing Dosage FormsWOWTAB," paper presented at the annual meeting of the AAPS, Salt Lake City, UT, Oct. 29, 2003. C.C. Characterizes moisture sorption properties and physical stability of lyophilized formulation in humidity, Characterization of hydrates and polymorphs, X-ray powder diffraction (XRPD) The blend is compressed into tablets using a conventional rotary tablet press. This is important, as the larger the particles, the more gritty and unpleasant the mouthfeel will be in an ODT. The trays are stored in a freezer until a sufficient quantity has been prepared to fill the freeze dryer, and then they are transferred into the dryer. As with all ODTs, products made with this process disintegrate in the mouth in 545 seconds and can be formulated to be bioequivalent to conventional tablet dosage forms (5). Orally disintegrating tablets (ODTs) have better patient acceptance and compliance and may offer improved biopharmaceutical properties, improved efficacy, and better safety compared with conventional oral dosage forms. The technology can accommodate water-soluble and water-insoluble drugs in doses as large as 750 mg, which may contain multiple active ingredients. Over the past three decades, orally disintegrating tablets (ODTs) have gained much attention as a preferred alternative to conventional oral dosage forms such as tablets and capsules.