Wheat flour is not added separately as an ingredient. Two of the enzymes are derived from/contain wheat flour.
It is not possible to specify exactly how much that is.

The input values of the enzymes themselves are:
Cellulase: 5 mg
Lipase: 1 mg

The manufacturer states that the Enzyme Complex should not be used during the breastfeeding period.

Chew your meals thoroughly. Avoid talking while eating. It is also advisable not to drink during meals (for instance, drink half an hour before the meal and not again until half an hour after) to minimise the dilution of your stomach acid by liquids. Only swallow each mouthful of food once it has been thoroughly chewed. The finer the food mixture, the better and quicker your stomach acid can act on each food particle. Moreover, chewing stimulates the release of enzymes in the mouth, which helps to initiate digestion there as well.

Preferably eat fruit on an empty stomach, such as for a fruit breakfast.

It is better to have soup as a snack rather than with the main meal.

Try to eat light meals five or six times a day instead of heavy meals three times a day.

Regularly drink ginger tea (preferably made from freshly grated ginger root) and/or tea based on chamomile, fennel, anise and caraway seeds.

Yes, enzymes such as those in the Enzyme Complex can cause complaints if there are already existing issues such as a stomach ulcer or perforation of the intestine. This could lead to pain in the upper abdomen.

Blood in the stool is unlikely to be caused by enzymes, but it can indicate a condition in the stomach or intestines. It is therefore important to inform your GP about this immediately.

When dealing with flatulence and sensitive bowels, it is primarily important to examine your eating habits. The use of digestive enzymes should be seen as a last resort. Our body can produce all the necessary enzymes without much difficulty. The problem is that our eating habits often make it very difficult for our bodies.

Key points to consider are: 1) never talk while eating, 2) preferably do not drink during meals, better to drink half an hour before and after a meal, as fluids dilute gastric juice, 3) no soup with the main meal, 4) always eat fruit on an empty stomach, for example, three-quarters of an hour before breakfast, 5) chew each bite sufficiently so that it is completely liquid when swallowed. The finer the food mixture, the better the body’s own digestive enzymes can act on it. Coarse chunks of food remain undigested in the gastrointestinal tract for too long because gastric juice with enzymes cannot reach the core of these chunks, ultimately leading to issues such as gas formation, diarrhoea, constipation, and irritation.

My advice is therefore to first consciously work on the aforementioned points for a few weeks to see how much this helps. If complaints persist, you can see what Enzyme Complex can do for you, or perhaps a probiotic.

Flatulence itself can be symptomatically treated with Redugas chewable tablets from Bional.

Indeed, there is a lot of choice when it comes to digestive preparations. The complex products (consisting of carbohydrate, fat, and protein-splitting enzymes) generally have the same effect. Single enzymes are recommended in special situations, such as lactose intolerance or the absence of the gallbladder.

We cannot make statements about that condition, but Enzyme Complex ensures that proteins and carbohydrates are broken down more quickly, starting in the stomach (and the better the food is chewed, the faster this process will occur). The free amino acids and sugars are then quickly absorbed in the intestines.