Digestive enzymes – when to consider supplementation
What exactly are digestive enzymes, and why does their role in the body extend far beyond mere ‘digestion’? Find out what functions they perform, in what situations their production may be reduced, and when supplementation might be a sensible option – always in consultation with a doctor.
Digestive enzymes are a group of proteins that the body produces naturally in various parts of the digestive tract to break down food into smaller, absorbable molecules. Without them, no balanced diet would fulfil its purpose – proteins would remain as long chains unable to be absorbed, fats could not be effectively converted into fatty acids used by cells, and complex carbohydrates could not be broken down into glucose. For this reason, the European Food Safety Authority (EFSA) has authorised a specific health claim for calcium: calcium contributes to the normal function of digestive enzymes. This is the only direct EFSA claim that explicitly refers to digestive enzymes – a key fact to bear in mind as you read on. Supplementation with ready-made digestive enzymes alone does not have any approved health claims, so when communicating about it we must tread carefully, focusing mainly on the biochemistry of the process and potential situations where there is an increased need.
What are digestive enzymes and how do they work
From a biochemical perspective, enzymes are proteins that act as catalysts – they accelerate specific chemical reactions without being consumed in the process themselves. Digestive enzymes are a specialised group whose role is the hydrolysis (breakdown in the presence of water) of macronutrients into simpler forms that the body can absorb and utilise.
Digestive enzymes are divided into three main groups depending on the substrate they act upon:
Proteases - break down proteins into peptides and amino acids. These include pepsin (produced in the stomach), trypsin and chymotrypsin (from the pancreas), and intestinal peptidases.
Lipases - break down fats (triglycerides) into fatty acids and monoglycerides. The main pancreatic lipase acts in the duodenum in the presence of bile, which first emulsifies the fats.
Carbohydrases (amylases) – break down carbohydrates into simple sugars. Salivary amylase begins the process in the mouth, whilst pancreatic amylase continues it in the small intestine. Additional enzymes (lactase, sucrase, maltase) break down specific disaccharides into simple sugars.
The production of digestive enzymes in the body is precisely regulated – it begins as early as the oral phase (at the sight and smell of food) and intensifies during the meal and as food moves through the successive sections of the digestive tract.
Where do the body’s enzymes come from?
Digestive enzymes are produced mainly in three places: the mouth (salivary glands), the stomach (chief cells producing pepsinogen) and the pancreas (acinar cells producing a full range of proteases, lipases and amylases). In addition, the epithelial cells of the small intestine produce enzymes that act on the surface of the brush border (including lactase and sucrase-isomaltase).
The pancreas acts as the main ‘production centre’ for digestive enzymes. Every day, it produces between 1 and 2 litres of pancreatic juice containing enzymes in the form of inactive precursors (zymogens), which are only activated once they reach the duodenum. This mechanism protects the pancreas itself from being digested by its own enzymes.
Situations in which enzyme production may be reduced
In a healthy adult, the natural production of digestive enzymes is usually sufficient to digest a balanced diet. However, there are specific situations in which the demand for enzymes may increase or their natural production may be reduced.
Age – over the years, the rate of production of certain digestive enzymes may gradually decline. This is a natural process which, in some people of mature age, may affect how comfortable they feel after meals – particularly those containing large amounts of protein or fat. For this reason, digestive enzymes are often considered for the over-55s.
Pancreatic conditions - chronic pancreatitis, cystic fibrosis, the post-operative period following pancreatic surgery, or cancers of this organ can lead to what is known as exocrine pancreatic insufficiency. However, these are strictly medical conditions requiring gastroenterological care and often prescription enzyme preparations – not dietary supplementation alone. If pancreatic insufficiency is suspected, you should always consult a doctor.
Post-gastrointestinal surgery – removal of part of the stomach, small intestine or pancreas may affect the production and function of digestive enzymes. Here too, medical care is the priority.
Certain chronic conditions – conditions such as coeliac disease, inflammatory bowel disease or irritable bowel syndrome can affect the functioning of the digestive tract – including enzyme activity.
Lactase deficiency – a separate condition; the absence or low activity of the lactase enzyme, which is responsible for breaking down milk sugar. This is a common condition in adults – particularly in certain ethnic groups.
Consumption of exceptionally large meals – an occasional situation in which the demand for enzymes may temporarily rise above the daily norm.
Calcium – the only nutrient with an approved health claim relating to digestive enzymes
Among the nutrients for which the EFSA has approved specific health claims, there is one that relates directly to digestive enzymes. Calcium contributes to the normal functioning of digestive enzymes. This is an approved claim, verified by the European regulatory authority. The mechanism is no coincidence – calcium acts as a cofactor in the activation of a number of digestive enzymes, and is also essential for the normal contraction of smooth muscles in the gastrointestinal tract (and thus for peristalsis).
Calcium also has a number of other approved claims: it contributes to normal blood clotting, normal energy metabolism, normal muscle function and normal nerve transmission, and is also necessary for maintaining normal bones and teeth. This makes it a component worth considering not only in the context of digestion, but also as part of a broader supplementation routine. You can find out more in the article calcium – is supplementation for everyone.
[products:enzymes- digestive-enzymes-60-capsules, sodium-butyrate-600-mg-60-capsules, zinc-15-mg-selenium-200-mcg-120-capsules, magnesium-125-mg-vitamin-B6-60-capsules]
What do digestive enzyme supplements contain?
Supplements labelled as ‘digestive enzymes’ are usually multi-ingredient formulas containing a combination of enzymes responsible for breaking down various macronutrients. Typical formulations include:
Proteases – enzymes that break down proteins. Supplements often use proteases of plant origin (bromelain from pineapple, papain from papaya) or microbial origin.
Lipases – enzymes that break down fats. Mainly microbial lipases (e.g. from Aspergillus oryzae) are used.
Amylases – enzymes that break down complex carbohydrates. These are also mainly of microbial origin.
Lactase – an enzyme that breaks down lactose (milk sugar). It is found in preparations for people with a deficiency of this enzyme.
Additional enzymes – some formulations contain cellulases (which break down plant fibre), invertase, glucoamylase and other specialised enzymes.
The quality of a particular supplement depends significantly on the enzymatic activity of each of its components (the ‘quantity’ in mg alone is not sufficient – what counts is the activity expressed in standardised units) and on its stability in the gastrointestinal tract (some enzymes are sensitive to the acidic pH of the stomach).
Who might be interested in digestive enzyme supplementation
The decision to take digestive enzyme supplements should always be an informed one and, in the case of any specific health complaints, should be preceded by consultation with a doctor. This is important because certain gastrointestinal symptoms that might prompt someone to take enzymes may indicate conditions requiring medical diagnosis (rather than self-medication).
In practice, digestive enzymes are often considered by:
People of mature age (55–65+) – as part of an extended supplementation routine for those whose natural rate of enzyme production may be slightly lower than in younger people.
People with a documented lactase deficiency – who take lactase enzymes before meals containing dairy products. This is a well-documented, sensible strategy.
People following medical consultation – for whom a doctor has indicated a potential benefit from additional enzymatic support (bearing in mind that pancreatic insufficiency is an area for prescription medication, not supplementation).
People consciously experimenting – during periods of intensive travel, festive seasons with lavish meals, or other occasional situations that deviate from their daily dietary routine.
On the other hand, digestive enzymes are not a substitute for medical care. If you regularly experience discomfort after meals, have problems with digestion, bloating, heartburn, diarrhoea or abdominal pain – consulting your GP or a gastroenterologist is far more important than taking a supplement on your own. These symptoms may have various causes requiring diagnosis.
Dosage and method of use
Digestive enzyme supplements are usually taken immediately before a meal or at the start of a meal. The reasoning is obvious – the enzymes are intended to aid the breakdown of food, so they should be in the digestive tract alongside the food being digested.
The typical dosage is 1–2 capsules per main meal, in accordance with the manufacturer’s recommendations. There is no point in taking enzymes on an empty stomach without a planned meal – without a substrate (food), the enzymes cannot work.
[tip: Take digestive enzymes immediately before a meal or at the start of a meal – they are designed to aid the breakdown of food, so they must enter the digestive tract at the same time as the food. There is no point in taking them on an empty stomach or several hours after a meal.]
Other ingredients that support digestive comfort
When discussing digestion and comfort after meals, it is worth remembering that digestive enzymes are just one of many elements in the bigger picture. Other ingredients that are sometimes considered as part of a mindful health routine for the digestive tract include:
Sodium butyrate - a short-chain fatty acid naturally present in the large intestine, where it acts as the main source of energy for the cells of the intestinal epithelium. It is sometimes considered as part of a mindful routine for those interested in gut health. Sodium butyrate has no health claims approved by the EFSA, so we approach its supplementation from a research perspective.
Zinc – contributes to the normal metabolism of macronutrients and the normal metabolism of fatty acids. Read more in the article on zinc.
B vitamins – contribute to normal energy metabolism (B1, B2, B3, B5, B6, B12) and to the normal metabolism of macronutrients (biotin). You can find out more in the article B vitamins – what roles do they play.
Magnesium – contributes to normal energy metabolism. You can find the full range of products supporting metabolism in the categories Specialist and Minerals.
[note: Vitaler’s digestive enzymes are a multi-ingredient enzyme formula in a convenient, easy-to-dose capsule – free from artificial colours, preservatives and unnecessary fillers. We regard them as part of a mindful routine for people who, after consulting a doctor, are considering such support – not as a substitute for professional medical care in the case of specific gastrointestinal conditions.]
Safety and contraindications
Digestive enzyme supplements at typical doses are generally well tolerated by healthy adults. The most commonly observed side effects (rare) include mild gastrointestinal discomfort and occasional allergic reactions – particularly in people with an allergy to pineapple (bromelain) or papaya (papain).
[warning: Do not treat digestive enzymes as a substitute for medical care. If you regularly experience discomfort after meals, or suffer from bloating, heartburn, diarrhoea, constipation, abdominal pain or other gastrointestinal symptoms – consult your GP or a gastroenterologist. These symptoms may indicate various conditions requiring diagnosis. Digestive enzyme supplementation is not recommended for pregnant or breastfeeding women without prior consultation, for people under the age of 18, for those with pancreatic conditions (cystic fibrosis, chronic pancreatitis – where prescription medication is required), those with active gastric or duodenal ulcers, those with liver disease, and those taking anticoagulants (bromelain and papain may affect their efficacy).]
FAQ – frequently asked questions about digestive enzymes
Do digestive enzymes help with bloating?
This statement goes beyond the approved health claims of the EFSA. Bloating can have many causes (ranging from dietary and functional factors to those requiring medical diagnosis), so self-medicating with digestive enzymes without consultation may delay the diagnosis of the actual cause of the symptoms. If bloating is regular or troublesome, consulting a doctor is far more important than taking a supplement.
Does a healthy person need enzyme supplementation?
In a healthy adult on a balanced diet, the natural production of digestive enzymes is usually sufficient. Supplementation may be considered in specific situations (middle age, lactase deficiency, occasional large meals), but it is not a ‘staple of daily supplementation’ in the same way as, for example, vitamin D3 or omega-3 fatty acids.
Can digestive enzymes be taken daily over the long term?
It depends on the context. Occasional use should not cause problems in healthy adults. Long-term daily use should be discussed with a doctor – particularly if the aim is to address a specific condition. Here again, the key is to seek a diagnosis first, and only then consider supplementation.
Do digestive enzymes affect the body’s own enzyme production?
This question often arises in the context of concerns that the body might be ‘discouraged’ from producing its own enzymes. The available scientific literature does not suggest that supplementation with digestive enzymes at typical doses leads to a permanent reduction in the body’s natural enzyme production. Nevertheless, the principle of common sense – occasional use and avoiding treating the supplement as a permanent ‘workaround’ for healthy digestion – is a sound approach.
Summary: Digestive enzymes are a group of proteins produced naturally in the digestive tract (mainly in the pancreas, stomach, intestines and mouth), responsible for breaking down proteins, fats and carbohydrates. In a healthy adult, natural production is usually sufficient – situations in which supplementation may be considered include older age, lactase deficiency and occasional deviations from one’s daily dietary routine. The only ingredient with a claim regarding its effect on digestive enzymes that has been directly approved by the EFSA is calcium. In the case of regular gastrointestinal complaints, the first step should be to consult a GP or a gastroenterologist – digestive enzymes are not a substitute for professional diagnosis and medical care.