A pastille is a small, round, soft confectionery product, typically made from sugar, gelatin, or gum base, and designed to be slowly dissolved or sucked in the mouth for prolonged flavor release or medicinal relief. Often flavored with fruits, herbs, menthol, or eucalyptus, pastilles are commonly used as throat lozenges to soothe irritation, coughs, or sore throats, though non-medicated varieties serve purely as sweets.[1][2] They differ from harder lozenges by their flexible, jelly-like texture and are a popular subset of gummy or soft candies in global confectionery markets.[3]The term "pastille" originates from the Latin pastillus, a diminutive of panis meaning "bread," referring to a small loaf or lump of dough-like material, and entered English via French in the 17th century. Historically, pastilles began as medicinal preparations rather than mere treats, with early examples developed in 19th-century Europe to aid digestion or respiratory issues using natural ingredients like bicarbonate of soda or herbal extracts. Notable innovations include the Vichy pastilles, invented in 1825 in Vichy, France, initially sold in pharmacies as a digestive remedy derived from local mineral springs, which gained popularity among the aristocracy before becoming a widespread candy.[4][5][6] Similarly, Italian producer Pastiglie Leone, founded in 1857 in Alba, Italy, started with digestive pastilles and expanded into a range of flavored varieties, contributing to the product's commercialization.[7]In modern production, pastilles are manufactured through processes involving mixing sweeteners with gelling agents, flavorings, and sometimes active pharmaceutical ingredients, followed by molding, cooling, and packaging to form uniform discs or shapes. They remain a staple in both over-the-counter remedies and everyday confectionery, with variations including vegan options using pectin instead of gelatin and functional types enriched with vitamins or probiotics for health benefits. Global consumption highlights their role in categories like gummy candies, where they account for significant market segments due to their portability and sensory appeal.[8][9]
History and Origins
Etymology and Early References
The term pastille originates from the Latin pastillus, a diminutive of panis meaning "bread," referring to a small loaf or roll-shaped preparation, often of medicinal or aromatic paste. This Latin root evolved through Old Frenchpastille, denoting a small medicated or perfumed pellet, before entering English in the 17th century to describe similar small, molded forms used for medicinal or fumigatory purposes.[5][10]The earliest documented references to pastilli as medicated preparations appear in ancient Roman literature, particularly in Pliny the Elder's Natural History (circa 77–79 CE), where he describes them as small pellets compounded from ingredients like viper flesh for therapeutic uses, including remedies against poisons and ailments affecting the throat and respiratory system. Pliny notes their form as compact rolls suitable for ingestion or application, highlighting their role in Roman pharmacopoeia as convenient carriers for herbal and animal-derived medicaments to alleviate coughs and inflammation.In the medieval Islamic world, the concept of such small medicinal forms was integrated into Arabic pharmacology under the term habb, meaning "pill" or "seed," influenced by Greco-Roman traditions but adapted with local botanicals. Avicenna (Ibn Sina) prominently features habb preparations in his Canon of Medicine (completed 1025 CE), an encyclopedic text that details compound pills drawing on Galenic compounding for various disorders, bridging ancient pellet traditions with systematic pharmacology.[11][12]By the Renaissance, the term and practice reemerged in European texts, with printed works on distillation and herbal remedies—precursors to modern pastilles—appearing in Hieronymus Brunschwig's Kleines Destillierbuch (1500), a German text on distillation and remedies. Brunschwig's formulations emphasize the use of distilled herbal essences for efficacy against conditions like catarrh and hoarseness, marking a transition from manuscript traditions to accessible printed pharmacopeia.[13][14]
Historical Development
The evolution of pastilles traces back to ancient medicinal practices, where herbal mixtures were compressed into small, dissolvable forms for oral relief of ailments. [15]In the 18th century, pastilles expanded across Europe as apothecaries crafted sugar-coated herbal varieties primarily for soothing sore throats and treating infections, facilitated by the Industrial Revolution's boost in sugar production from colonial sources, which made sweetening agents more accessible. [16][17] By this period, these remedies transitioned from basic herbal compressions to more palatable, coated forms produced in apothecary shops amid rising urban health demands. [18]The 19th century marked the commercialization of pastilles, with innovations including the Vichy pastilles invented in 1825 in Vichy, France, as a digestive remedy from local mineral springs, and Pastiglie Leone founded in 1857 in Alba, Italy, starting with digestive varieties.[6] Other firms like Fisherman's Friend launched in 1865; pharmacist James Lofthouse developed strong menthol-based lozenges to alleviate respiratory distress among fishermen exposed to harsh sea conditions. [19] This era saw innovations in flavoring, such as menthol integration, alongside herbal blends.Throughout the 20th century, pastilles achieved global dissemination through pharmaceutical progress, including their deployment in wartime for managing soldiers' respiratory problems, as seen in military medical kits addressing upper respiratory infections during conflicts like World War II. [20] Exemplified by Ricola's founding in 1930 by confectioner Emil Richterich, who produced Swissherbal pastilles targeting cough and throat relief. [21] Post-World War II, pastilles diversified beyond medicinal uses into everyday confections, fueling market expansion in regions like Asia and the United States by the 1970s, driven by rising consumer demand for flavored sweets amid economic recovery and globalization. [22]
Composition and Ingredients
Primary Components
Pastilles, whether medicinal or confectionery, rely on base binders to provide structural integrity, control dissolution rates, and ensure a pleasant mouthfeel. Sweeteners such as sucrose contribute to sweetness and gradual dissolution in the oral cavity, often combined with corn syrup to prevent crystallization. In sugar-free formulations, substitutes such as sorbitol are employed to achieve similar dissolution properties while offering a cooling sensation and reduced cariogenic potential.[23] For chewable varieties, gelatin or gum arabic serves as a gelling agent, imparting a soft, elastic texture that enhances palatability and prolongs contact with the oral mucosa.[24]In medicinal pastilles, active agents are incorporated to deliver therapeutic effects directly to the throat and oral tissues. Menthol, derived from peppermint oil, is commonly used to provide a cooling sensation that soothes irritation and suppresses cough reflexes.[25]Eucalyptus oil contributes antimicrobial and decongestant properties,[26] while herbal extracts like licorice root provide demulcent effects to coat and protect inflamed tissues.[27]Flavor enhancers balance the taste profile and mask any bitterness from active ingredients. Citric acid is added for tartness, typically at concentrations up to 3% in related confectionery forms, aiding in pH adjustment and sensory appeal.[28] Natural essences, such as lemon or cherry, are incorporated at 1-5% by weight to impart fruity notes that improve compliance, particularly in pediatric or long-term use scenarios.[29]Preservatives are used sparingly in commercial pastilles to inhibit microbial growth and maintain product stability. Sodium benzoate, applied at minimal levels, extends shelf life to approximately 2 years by preventing spoilage in acidic environments.[30]
Variations in Formulation
Sugar-free variants of pastilles employ polyols such as xylitol and mannitol as sugar substitutes, significantly lowering calorie intake while maintaining sweetness and texture suitable for diabetic-friendly options. These ingredients provide a reduced glycemic response compared to traditional sugar bases, making them a preferred choice for individuals managing blood sugar levels. The use of polyols in such formulations gained prominence in the 1980s as research highlighted their benefits for dental health and diabetes management, with products like throat lozenges benefiting from their non-cariogenic properties.[31][32]Herbal-intensive formulas, particularly in European traditions, feature elevated levels of extracts from plants like thyme and sage, which contribute antimicrobial and soothing effects to the pastille's core sugar or polyol base. For instance, formulations may include thyme extract at 25 mg per lozenge for its expectorant qualities and sage at similar levels for its anti-inflammatoryproperties, contrasting with American counterparts that emphasize fruit-based flavors for palatability over herbal potency. These European-style pastilles draw from longstanding herbal pharmacopeias, prioritizing therapeutic botanicals in higher proportions to enhance respiratory relief.[33][34]Vegan adaptations of pastilles have replaced animal-derived gelatin with plant-based gelling agents like pectin or agar, addressing ethical concerns and expanding accessibility for vegetarian and vegan consumers. Pectin, derived from citrus peels, provides a soft, jelly-like consistency ideal for soothing lozenges, while agar from seaweed offers firmer structure without compromising efficacy. This shift emerged prominently in the 2010s amid rising demand for plant-based alternatives in the confectionery and pharmaceutical sectors, enabling broader market penetration for allergen-free and cruelty-free products.[35][36]Effervescent pastilles integrate sodium bicarbonate to generate a fizzing reaction upon contact with saliva or water, which helps disperse active ingredients and provides a novel throat-soothing sensation distinct from non-effervescent solid forms. This formulation enhances the release of demulcents or antiseptics, offering immediate relief for irritation through mild carbonation that stimulates salivation and coats the mucous membranes. Commonly found in cold and cough relief products, these pastilles leverage the bicarbonate's antacid-like properties to alleviate associated discomfort without requiring dissolution in liquid.[37]
Production Methods
Traditional Techniques
Traditional techniques for producing pastilles involved labor-intensive, artisanal processes used by apothecaries, focusing on gentle heating to preserve herbal extracts and gelling agents. The process began with blooming gelatin or preparing gum acacia mucilage in warm water (around 50-60°C) to hydrate the gelling agent without degradation. Herbal infusions, such as decoctions of horehound or eucalyptus, were prepared separately by steeping or gentle boiling in water to extract active compounds, then strained and incorporated into a sugar or honey syrup cooked to the soft ball stage (approximately 115°C) for sweetness and binding.[38]The gelatin or gum solution was then combined with the cooled syrup and flavorings, creating a pourable mixture. This mass was poured into starch molds or pressed using simple wooden forms to shape small disks (5-10 mm in diameter), allowing for uniform dosing and even dissolution. This molding approach, common in 19th-century European pharmacopeias, ensured the soft, flexible texture while distributing herbal elements effectively.[39]The shaped pastilles were placed on trays for air-drying in cool, low-humidity environments (around 20-25°C) for 24-48 hours, promoting setting without hardening excessively and preventing microbial growth. In some herbal varieties, as noted in the French Codex of 1884, additional dusting with powdered sugar aided drying and prevented sticking during storage.[38]
Modern Manufacturing
Modern manufacturing of pastilles uses automated systems for efficient, consistent production of both medicinal and confectionery varieties. The process starts with preparing the sugar syrup—typically sucrose and glucose syrup—heated in steam-jacketed kettles to 110-120°C to achieve the desired concentration (around 75-80° Brix) and prevent crystallization. Separately, gelling agents like gelatin are bloomed in water and dissolved at 50-60°C to maintain functionality.[40]The components are then combined in continuous mixers at approximately 80°C, with active ingredients, flavors, and colors added for homogeneity. The viscous mixture is deposited into starch trays or silicone molds using automated depositors, which can form thousands of units per hour, followed by vibration to remove air bubbles and ensure uniform shapes.[3]Deposited pastilles enter controlled drying tunnels or rooms at 20-30°C and 40-50% relative humidity for 12-48 hours (depending on formulation), allowing the gel structure to set while achieving the characteristic soft texture. For pectin-based vegan variants, acidification steps are included post-deposition to activate gelling.[3]Packaging follows inline, using moisture-barrier materials like foil or polymer films to protect against humidity and extend shelf life, in line with FDA CGMP (21 CFR Part 211) and EU GMP standards. Quality control employs techniques such as near-infrared (NIR) spectroscopy for non-destructive verification of ingredient uniformity, ensuring compliance with pharmacopeial requirements for content and dissolution.[41][42]
Types and Varieties
Medicinal Pastilles
Medicinal pastilles are soft, jelly-like formulations designed to deliver active pharmaceutical ingredients directly to the oral and pharyngeal mucosa for targeted relief of various health conditions. These dissolve slowly in the mouth, promoting localized absorption and minimizing systemic exposure. Unlike harder lozenges, medicinal pastilles use gelling agents like gelatin or pectin for a flexible texture. They commonly address respiratory and oral health issues, incorporating analgesics, antitussives, antiseptics, or herbal extracts to alleviate symptoms like pain, irritation, and infection.[39]Cough and throat relief pastilles often contain local anesthetics or antitussives in a soft base. For example, some pectin-based soft pastilles include menthol or herbal extracts like eucalyptus for soothing effects. Herbal medicinal pastilles frequently feature echinacea or zinc gluconate to bolster immune function, particularly during cold and flu seasons. Products like Jamieson's Zinc Lozenges contain 10 mg zinc gluconate per lozenge alongside echinacea extract, aiding in immune support by enhancing mucosal defense mechanisms and reducing symptom duration. These natural remedy options, popular in over-the-counter markets, leverage zinc's role in immune cell function and echinacea's potential antiviral properties.[43] As of 2025, vegan medicinal pastilles using pectin instead of gelatin are increasingly available, including varieties enriched with vitamins or probiotics for added health benefits.[44]Niche applications include soft nicotine replacement pastilles for smoking cessation, though most common forms are harder lozenges. Many medicinal pastilles incorporate flavor profiles overlapping with confectionery varieties to enhance palatability and compliance.
Confectionery Pastilles
Confectionery pastilles are small, often disc-shaped or round sweets designed primarily for enjoyment, featuring a soft, chewy texture with flavors derived from fruits, herbs, or other natural essences. These non-medicinal candies emphasize sensory appeal through dissolution or light chewing, typically produced via molding techniques with gelling agents but optimized for palatability rather than functionality.[45]Soft or gummy variants of pastilles employ pectin or starch as primary gelling agents in vegan formulations, providing a tender, chewable consistency, and are frequently infused with berry or citrus essences for vibrant taste. These are often coated in granulated sugar to prevent sticking and enhance crunch. This formulation yields products like Rowntree's Fruit Pastilles, which feature flavors such as strawberry, lime, and blackcurrant in small, rounded shapes that balance chewiness with quick flavor release. Traditionally gelatin-based, they have been reformulated to vegan standards using plant-derived gelling agents as of the 2020s.[46][47]Regional specialties highlight cultural adaptations of pastille-style confections, incorporating local ingredients and traditions for distinctive profiles. Turkish delight-inspired rosewater pastilles, known as lokum, are soft, starch-based sweets flavored with rosewater distillate, dusted with powdered sugar or cornstarch for a powdery exterior and subtle floral notes.[48]Novelty types have emerged to appeal to premium markets, featuring layered or filled constructions that add complexity to the traditional pastille form. Introduced prominently in the 2000s, these include multi-layered pastilles with contrasting textures, such as outer soft shells encasing fruit centers, or filled variants with chocolate interiors for a decadent melt. Examples encompass innovations like Mentos layered chewy mints with outer coatings, evolving into fruit-filled hybrids.[49]
Uses and Applications
Therapeutic Roles
Pastilles serve as a therapeutic aid for soothing irritated throats primarily through the demulcent action of their sugar and mucilage components, which form a protective coating over inflamed mucous membranes in the oropharynx. This mechanism provides symptomatic relief for conditions like pharyngitis and upper respiratory infections.[50][51]In addition to mechanical soothing, pastilles facilitate the delivery of antiseptics such as cetylpyridinium chloride or hexylresorcinol directly to the oral cavity, targeting minor bacterial infections associated with sore throats. Efficacy data from in vitro and clinical studies on oral hygiene products indicate that these agents achieve over 99% reduction in viable counts of common pathogens like Streptococcus pyogenes within minutes of exposure, supporting their role in reducing microbial load and preventing secondary infections.[52] Although specific World Health Organization guidelines on lozenges are limited, broader recommendations for antiseptic mouthwashes and similar products endorse their use for adjunctive oral hygiene in preventing plaque and gingivitis, with analogous benefits observed in pastille formulations.[53]Pastilles also play an adjunctive role in respiratory therapy, particularly those containing menthol, which stimulates cold receptors in the airways to produce a cooling sensation and mild bronchodilatory effects. Studies on menthol in respiratory aids have shown improvements in perceived airway patency, primarily through sensory effects rather than major objective changes.[54] This makes them useful for short-term relief in conditions like acute bronchitis or cough, but evidence emphasizes their supportive rather than primary therapeutic value.[55]Despite these benefits, pastilles are not substitutes for antibiotics in treating bacterial infections, as they lack systemic antimicrobial activity and are classified by the U.S. Food and Drug Administration solely as over-the-counter aids for temporary symptomatic relief of minor throat irritation. Historical FDA actions, including the 1966 ban on antibiotic-containing lozenges due to insufficient efficacy evidence, reinforce their positioning as non-prescription options for self-care rather than curative interventions.[56]
Culinary and Cultural Uses
Pastilles have long been employed as breath fresheners in social settings. In festive traditions, pastilles hold special significance. Scandinavian "pastiller," such as the popular salty licorice varieties from brands like Toms, feature prominently in Christmas assortments, where they contribute to the abundance of hard candies enjoyed during holiday gatherings and family rituals, evoking seasonal coziness and nostalgia.[57]Pastilles also appear in gourmet culinary pairings, where they function as palate cleansers alongside cheeses or teas.[58]In contemporary pop culture, pastilles gained visibility through media endorsements, including 1980s television advertisements for products like Tic Tac, which positioned the tiny mints as essential for instant fresh breath in everyday social scenarios, embedding them in global consumer habits. Additionally, vegan adaptations of pastilles, often fruit- or herb-based without animal-derived ingredients, have integrated into global street foods, appearing in markets from Europe to Asia as accessible, plant-friendly options for post-meal refreshment. Modern variations include functional pastilles enriched with vitamins or probiotics for additional health benefits.[59][60][9]
Health and Safety Considerations
Benefits and Efficacy
Pastilles offer hydration and lubrication benefits through their slow-melting bases, which stimulate saliva production and coat the oral mucosa to alleviate dry mouth symptoms. In a randomized controlled clinical study involving 26 participants with dry mouth, sucking a polysaccharide-based pastille increased mean salivary flow rate from 2.03 g/10 min to 10.06 g/10 min (p < 0.0001) and reduced visual analog scale (VAS) dry mouth scores by 19.9 mm (p = 0.0016) compared to a control pastille. This mechanical and moisturizing action provides symptomatic relief for conditions like xerostomia by enhancing oral hydration without systemic effects.[61]The sensory stimulation provided by ingredients such as menthol in pastilles contributes to psychological comfort, often enhancing perceived relief through placebo-like mechanisms in pain management. Menthol's cooling sensation activates TRPM8 receptors, attenuating hyperalgesia and promoting a soothing effect that reduces discomfort in acute scenarios. A randomized trial in cardiovascular surgery patients demonstrated that menthol lozenges post-extubation significantly improved comfort levels by alleviating thirst and nausea, with effects persisting beyond physiological changes alone.[62][63]Certain pastille formulations are fortified with vitamin C to deliver nutritional support, acting as an antioxidant to bolster immune function in variants designed for preventive health. For instance, immune-boosting lozenges may contain 50 mg of vitamin C per pastille, contributing to white blood cell production and oxidative stress reduction. This addition enhances the therapeutic value beyond mechanical relief, particularly in short-term immune support applications.[64]Meta-analyses of randomized controlled trials confirm the mild efficacy of throat lozenges, including formulations similar to pastilles, for short-term sore throat relief, primarily through local anti-inflammatory and anesthetic actions, though they show limited benefit for chronic conditions. A systematic review and meta-analysis of three trials (n=660) found that amylmetacresol/2,4-dichlorobenzyl alcohol (AMC/DCBA) lozenges reduced pain intensity with a standardized mean difference of -0.6 (95% CI: -0.75 to -0.45) at 2 hours post-dose compared to placebo, supporting their use for acute pharyngitis symptoms like throat soreness. These findings underscore pastilles' role in providing rapid, albeit modest, symptomatic improvement without addressing underlying chronic pathologies.[65]
Potential Risks
Pastilles and hard lozenges, due to their small size—particularly the gummy, sticky texture of soft pastilles and the firm texture of hard varieties—present a significant choking hazard for young children, especially those under age 5, as they can obstruct airways if not chewed properly. In the United States, more than 12,000 children were treated in hospitalemergency rooms annually for nonfatal food-related choking incidents as of data from 2001–2009, with hard candy and similar items such as cough drops accounting for a substantial portion—approximately 15.5% of cases involving hard candy alone based on national surveillance data from that period. Gummy candies, including soft pastilles, are also recognized as choking hazards for children under 4 due to their chewy nature. Children under 4 represented 62% of these nonfatal episodes, underscoring the need for adult supervision and avoidance of such products in this age group.[66][67][68][69]Allergic reactions to pastille ingredients, though uncommon, can occur and may range from mild skinirritation to severe anaphylaxis. Menthol, a frequent component in medicinal pastilles for its cooling effect, has been linked to hypersensitivity reactions including contact dermatitis, urticaria, and in rare cases, anaphylaxis, as documented in clinical reports.[70] Similarly, pastilles flavored or containing nut extracts (e.g., almond or peanut derivatives in some confectionery varieties) can trigger reactions in individuals with nut allergies, though prevalence data specific to lozenges is limited; general food allergy studies indicate that tree nut allergies affect about 1% of the U.S. population, with potential cross-reactivity in processed forms.[71] Users with known allergies should consult product labels and healthcare providers before consumption.[72]Overuse of pastilles carries risks related to their composition, particularly for dental and gastrointestinal health. Sugary varieties often contain 2.5–4 grams of sugar per piece, which can promote acid production by oral bacteria during prolonged dissolution, contributing to enamel demineralization and dental caries, especially with frequent intake.[73][74] Sugar-free alternatives sweetened with sorbitol, a sugar alcohol, may lead to laxative effects such as diarrhea, bloating, and abdominal discomfort when consumed in excess; intakes exceeding 20–50 grams daily (potentially from 10–20 lozenges, depending on formulation) can overwhelm digestive tolerance, as sorbitol is poorly absorbed and fermented by gut bacteria.[75][76]Regulatory concerns with pastilles, especially herbal or imported varieties, include contamination with heavy metals like lead, prompting recalls to protect consumers from chronic exposure risks such as neurological damage. The U.S. Food and Drug Administration (FDA) recommends a maximum lead level of 0.1 parts per million (ppm) in candies likely consumed frequently by children, with enforcement actions against exceeding products. For instance, in 2016, Ton Shen Health & Herbs recalled its DHZC-2 herbal tablets due to elevated lead levels detected in FDA sampling, highlighting vulnerabilities in unregulated herbal formulations that may appear in pastille products.[77][78] Consumers are advised to check for FDA recalls and select products from reputable sources to minimize such hazards.[79]