What matters in this format
A food-supplement tablet must deliver the label claim in one compact, uniform unit that survives packing and transport. Density, flow and compressibility therefore decide most ingredient choices. Swallowable, chewable and effervescent tablet manufacturing share the same press but differ in excipients, taste and moisture control.
- Tablet mass. High-claim actives such as minerals and amino acids set the tablet size. Forms with more nutrient per gram leave room for excipients. The elemental content calculator gives the salt mass for a chosen claim.
- Flow. The blend must fill each die evenly at press speed. Poor flow causes weight variation and, with it, content variation.
- Compression. Some actives bond well under pressure. Others are brittle or elastic and cap or laminate, so they need compressible grades or granulation.
- Moisture. Wet granulation adds water and heat. Hygroscopic actives, some vitamins and enzymes are better handled by dry granulation or direct compression.
- Content uniformity. Microgram-level vitamins are a tiny fraction of the tablet. Diluted or encapsulated forms spread them evenly through the blend.
- Disintegration and dissolution. Binder level, compression force, lubricant and coating all change how fast the tablet breaks up. The finished-product specification sets the test.
- Taste. Chewable and effervescent tablets release the active in the mouth or in water. Bitter, salty or metallic notes then need masking.
Ingredients that suit it
| Ingredient | Why it fits tablets | What to watch |
|---|---|---|
| Calcium carbonate | High calcium content per gram keeps tablet mass down | Fine powders flow and compress poorly; reacts with acids, which effervescent blends use deliberately |
| Dicalcium phosphate | Acts as a compressible filler as well as a calcium and phosphorus source | When used as filler, its calcium and phosphorus still count in the declared nutrient content |
| Magnesium oxide | High magnesium content per gram suits high claims; see the magnesium forms guide | Light and heavy grades differ in density and flow; practically insoluble, so unsuited to clear effervescent solutions |
| Ascorbic acid | Used in swallowable, chewable and effervescent tablets | Fine crystalline material compresses poorly; sensitive to moisture and metal ions, which can cause discolouration |
| Cholecalciferol, cyanocobalamin, folic acid | Microgram claims add almost no mass | Use diluted or beadlet forms for uniformity; plan stability losses with the overage calculator |
| Riboflavin, thiamine hydrochloride, pyridoxine hydrochloride | Small masses that blend easily into multivitamin premixes | Riboflavin colours the blend and can show as specks; protect light-sensitive vitamins |
| L-lysine hydrochloride, creatine monohydrate | Crystalline powders that can be compressed | Gram-level claims may need more than one tablet per serving |
| Botanical extracts | Dry extracts standardised on a carrier | Often hygroscopic and sticky; may need granulation and a glidant |
| Bromelain, papain | Small masses with activity stated on the certificate of analysis | Heat and moisture in wet granulation can reduce activity; direct compression is usually preferred |
Effervescent tablet manufacturing
Effervescent tablets combine an acid with a carbonate or hydrogencarbonate that reacts in water and releases carbon dioxide. Citric acid is the usual acid, and trisodium citrate acts as an acidity regulator. The reaction starts with any moisture, so production runs at low relative humidity and packaging must be moisture-tight.
Actives should dissolve or disperse cleanly in water. Lubricants are a known problem, because magnesium stearate is hydrophobic and can leave a film on the drink. Sodium stearyl fumarate, a less hydrophobic lubricant used in medicines, is not listed in Annex II Part B of Regulation (EC) No 1333/2008, so it cannot be used as an additive in food supplements. The effervescent tablets guide covers this format in detail.
Excipients and processing aids
| Excipient | Role in tablets | Note |
|---|---|---|
| Microcrystalline cellulose | Filler-binder for direct compression | Also aids disintegration |
| Mannitol | Filler for chewable tablets | Low hygroscopicity; pleasant mouthfeel |
| Sorbitol | Filler and sweetener for chewable tablets | Hygroscopic; control humidity |
| Erythritol | Filler and sweetener for chewable tablets | Gives a cooling sensation |
| Polydextrose | Filler and binder | Hygroscopic; check storage conditions |
| HPMC (hypromellose) | Binder, film coating, matrix former for slower release | Viscosity grade decides the role |
| Gelatin | Binder in wet granulation | Animal origin affects some product claims |
| Magnesium stearate | Lubricant | Overmixing reduces hardness and slows dissolution |
| Sodium stearyl fumarate | Lubricant in medicines | Not listed in Annex II Part B of Regulation (EC) No 1333/2008, so not usable as an additive in food supplements |
| Silicon dioxide | Glidant and flow aid | Also adsorbs moisture or oily actives |
| Citric acid | Effervescent acid; acidulant in chewables | Hygroscopic; keep dry |
| Trisodium citrate | Acidity regulator in effervescent and chewable tablets | Adds sodium to the formula |
Pectin and pullulan are mainly used in gummies and capsule shells, so they are rarely tablet excipients. Pullulan sometimes appears as a film former in coatings. The excipients category lists all processing aids.
Regulatory and labelling points
Directive 2002/46/EC defines food supplements as products marketed in dose form and names tablets among those forms. Vitamin and mineral sources must be forms listed in its Annex II. The guide to permitted vitamin and mineral forms explains how to check a form.
Excipients that are food additives must be authorised for food supplements in Annex II of Regulation (EC) No 1333/2008, within any conditions of use. They must also meet the specifications in Regulation (EU) No 231/2012. Colours and glazing agents in coatings need the same check. Some binders, such as gelatin, are treated as food ingredients rather than additives.
Under Regulation (EU) No 1169/2011, additives appear in the ingredients list by functional category, followed by name or E number. Its Annex III adds mandatory statements for foods containing sweeteners and for foods with added polyols above a set level. Chewable tablets based on sorbitol, mannitol or erythritol need this check. The labelling guide covers the full list of particulars.