best zinc supplement

Zinc Supplements: Test & Reviews

Author: Anne Jonson

Diet & Nutrition Expert

Welcome to our great zinc test. Here we present you all of the zinc supplements that we have tested. We have compiled detailed background information for you and also added a summary of customer reviews online.

We want to make the purchase decision easier for you and help you to find the best zinc product for you.

You can also find answers to frequently asked questions in our guide. You will find important information on this page that you should definitely pay attention to if you want to buy zinc.

Best Magnesium Supplements

Best zinc capsules in combination with MCT oil

This sundt product is a zinc preparation in capsule form. In addition to zinc citrate, MCT oil is also included to increase the health benefits of the essential trace element. Thus, the combined natural power of both is supplied to the body per recommended daily dose of one capsule.

This benefits important functions in the body, such as growth, protein synthesis and the strengthening of the immune and cardiovascular systems. With this preparation from sundt, a reliable zinc supply is guaranteed for around two months per package content of 60 capsules.

The manufacturer ensures the highest quality. The preparation is also free from genetic engineering, sugar, gluten and lactose and therefore also suitable for allergy sufferers.

Best zinc tablets

With this product you can build up an annual supply of zinc tablets. Each tablet contains 25 milligrams of zinc bisglycinate. The tablets are well tolerated and have a 40 percent higher bioavailability than zinc gluconate.

The tablets are vegan and contain no release agents, coloring agents or preservatives. The product is regularly tested independently in the laboratory. The tablets are small and easy to swallow. The manufacturer offers a one year satisfaction guarantee.

Best zinc tablets with L-histidine

The Mount Natural Premium zinc tablets made in Germany offer you an annual supply of 365 pieces. It is therefore also clear that the consumption recommendation is one tablet per day. It contains 15 mg zinc, which is 150% of the recommended daily dose. This is less than with other manufacturers – this is to prevent overdosing.

High-quality zinc bisglycinate is used, which is supported by the amino acid L-histidine and has a high bioavailability. This enables the body to better utilize it. According to laboratory tests, the lactose, fructose and gluten-free Mount Natural Premium Zinc tablets contain no pesticides, heavy metals and germs.

Best zinc tablets with biotin and selenium

This high-dose combination preparation offers an annual supply of biotin tablets, which are enriched with zinc and selenium and are therefore the ideal combination of nutrients for skin, hair and nails.

The small tablets are easy to take and are also suitable for vegetarians and vegans. The product dispenses with the controversial release agent magnesium stearate. It is a German quality product that is subject to regular controls.

Best zinc capsules

Zinc is available here in a high-dose dietary supplement. ESN zinc is particularly suitable for competitive athletes who want rapid muscle regeneration.

One capsule covers the recommended daily requirement. The capsules are easy to swallow and are offered at a favorable price-performance ratio. It is a product made in Germany, which is also suitable for vegetarians and vegans.

Questions to Consider Before Buying Zinc supplements

Why is zinc so important for the body?

Zinc is the activator for over 200 proteins, which control the hormonal balance and ensure the functioning of enzymes. Furthermore, the mineral is essential for the carbohydrate and fat metabolism.

Zinc is also needed for cell growth and we need zinc even in order to be able to distinguish between the individual flavors.

In summary, zinc supports the following body functions:

  • Immune system
  • Cell division
  • Growth
  • Bone health
  • Cell protection
  • Protein synthesis
  • Metabolism

In healthy people, zinc deficiency can largely be avoided by eating a wholesome diet. Additional zinc intake is indicated for certain risk groups.

Are there frequent zinc deficiencies?

he World Health Organization (WHO) states that around half of the world’s population does not consume enough zinc. The main reason for this thesis is to be found in modern eating habits.
The following groups of people have an increased zinc requirement:

  • Children
  • Teenagers
  • Competitive athlete
  • Pregnant women
  • Breastfeeding

Likewise, people who suffer from intestinal diseases may have an increased need for zinc, as zinc can then be absorbed less easily.

What are the causes of a zinc deficiency?

Nutritional deficiencies are the main cause of zinc deficiency. While malnutrition plays a major role in developing countries, ready meals and fast food as well as one-sided diets are the cause of too little zinc in the body in industrialized countries.

The calcium contained in milk and milk products can also stand in the way of the absorption of zinc.

Plant-based foods can also contain substances that hinder the absorption of zinc. This includes phytic acid, for example, which has the property of binding zinc to itself.

An increased need for zinc occurs in the following situations:

  • Diseases
  • Inflammation
  • Infections
  • Stress
  • Smoke
  • Growth
  • Pregnancy

Older people naturally have a higher need for zinc. Also in the development phase of children and adolescents it is important to ensure that there is an adequate supply of zinc.

What are the symptoms of zinc deficiency?

A whole series of symptoms occur, some of which make the diagnosis more difficult and even laypeople do not associate them with a zinc deficiency.
The range of symptoms is so diverse because zinc is involved in a wide variety of metabolic processes and creates corresponding deficits there.

The general symptoms can be summarized as follows:

  • Fatigue
  • Listlessness
  • Weakness
  • Mood swings
  • Lack of concentration
  • Depressions

The following overview lists the different symptoms separately according to certain main groups.

  • Immune system: susceptibility to infection increases, frequent colds, infections in the oral cavity increase
  • Hormonal balance growth: disorders, erectile dysfunction, infertility
  • Skin, hair, nails: dry skin, acne, eczema, broken nails, hair loss
  • Sensory organs: visual disturbances, night blindness, dry eyes

Deficiency symptoms are most evident in the skin, hair and fingernails. So-called zinc deficiency dermatitis can occur, which manifests itself in reddening of the skin on the face, fingers or genital area.

How can zinc deficiency be determined?

A zinc deficiency can hardly be detected at an early stage. Since a zinc deficiency leads to a general immune deficiency, other diseases are often brought into focus and the actual cause of the zinc deficiency is not recognized.
There are two options for determining a zinc deficiency:

  • Arrange blood test
  • Observe symptoms and take zinc supplements

If a zinc deficiency is suspected, the doctor can draw blood and have the zinc level in the blood determined. You can try the second method yourself. If you notice any of the symptoms mentioned here, get yourself an over-the-counter zinc supplement and watch your body react to them.

What should be considered when taking zinc supplements?

So that zinc supplements can be easily absorbed by the body, they should not be taken immediately with meals. One to two hours should pass before something is eaten again after taking the preparation.

Zinc is best used by the body if you take it on an empty stomach. Binding to an amino acid also facilitates absorption.

If you take iron supplements, you should only start taking zinc after about three hours, because iron makes it difficult to absorb zinc. Anyone who suffers from kidney problems should not resort to zinc supplements without authorization, but discuss the intake with a doctor.

What types of Zinc supplements are there and which one is right for you?

Basically, one can differentiate between four types of zinc:

  • Zinc tablets
  • Zinc capsules
  • Zinc powder
  • Zinc drinking ampoules

Zinc tablets: Advantages & Disadvantages

The selection of zinc tablets is particularly extensive, as it is the most popular form of the mineral. Since the range is diverse, there are also differences in terms of composition, package sizes and price.

Taking tablets saves you from having to dose yourself. The dosage is usually designed in such a way that one tablet per day is sufficient and can therefore be taken comfortably. If you only want to take half the amount, you can simply split the tablets.

There is a price advantage if bulk packs are used. These often contain a monthly supply of tablets. Before buying, you should pay attention to the ingredients and make sure that you can tolerate the product.

Zinc capsules: Advantages & Disadvantages

Zinc capsules are also ideal for quick ingestion and easy dosing. However, it must be assumed here that the user has no problems with taking capsules.

Zinc capsules are high-dose and one capsule a day is usually sufficient. The large packs make it possible to stock up on a substantial supply and save money in the process.

Capsules are hygienic, ideal for taking on the go and usually have a shelf life of several years. It is important for vegetarians and vegans to pay attention to the substances contained in the capsule shells. Gelatin is often used here.

Zinc powder: Advantages & Disadvantages

If you have problems taking tablets and capsules, zinc powder is a good choice. In addition, with this preparation you get the opportunity to determine the zinc dose yourself.

Zinc powder is a natural substance that hardly contains any additives and is also suitable for vegetarians and vegans. The intake can be varied by simply stirring zinc powder into water or using it in smoothies.

Zinc drinking ampoules: Advantages & Disadvantages

This dosage form is the exception. Zinc in liquid form is better known from industry and is used for galvanizing metal. Some manufacturers also offer liquid zinc for the healthcare sector.


Terms such as “ionic” or “colloidal” are often used in connection with zinc. It is zinc, which is dissolved in subtle form in distilled water. The number of manufacturers of these solutions is currently limited.

Purchase criteria: Use these factors to compare Zinc supplements

In the following we would like to show you which factors you can use to compare and evaluate zinc. This will make it easier for you to decide whether a particular zinc is right for you or not.

In summary, these are:

  • Dosage form
  • Ingredients
  • Dosage
  • Bioavailability

Dosage form

The dosage forms have already been discussed. This purchase criterion is particularly important if you cannot or do not want to swallow capsules or tablets and are looking for an alternative that is easier to take.

All dosage forms contain the active ingredient in high doses and with good bioavailability. If you want to dose zinc yourself, powder and solution are ideal. If you should stick to a fixed dose, capsules or tablets are well advised.


The ingredients of zinc supplements are particularly important in terms of their own tolerance. If there are allergies or intolerances, the package inserts should be studied carefully.

While zinc powder offers the best possible purity, various additives can also be used in tablets and capsules. The material of the capsule shell is crucial for vegans and vegetarians.

Certain combinations of nutrients are beneficial for the absorption and usability of zinc. So histidine promotes the absorption of zinc. Histidine is an amino acid that has similar functions to zinc in the body. A combination of both substances is helpful because a zinc deficiency also increases the need for histidine.

Zinc and vitamin C are immune boosters and can increase the body’s defenses. Vitamin C also promotes the absorption of zinc. When choosing the right preparation, you should pay attention to the natural, synthetic or buffered occurrence.


The individual zinc preparations have different dosages. In the case of capsules and tablets, the manufacturer’s instructions must be observed. You have to dose zinc powder and zinc solution yourself.

The dosage should be discussed with a doctor. Preparations with 25 milligrams of zinc and more are classified as high doses.

An overdose is assumed from an amount of around 300 milligrams. Nausea, diarrhea, vomiting, and headaches are possible consequences.


The bioavailability of a substance indicates how quickly and in what quality the body can absorb the food supplement. The bioavailability depends on various factors and is around 20 to 40 percent for zinc.

Zinc from animal sources has a higher bioavailability because the phytic acid contained in plant substances reduces the absorption of zinc in the body.

Facts about Zinc

Does zinc poisoning really exist?

It is actually possible to get poisoned with zinc. If zinc is overdosed over a longer period of time, the substance accumulates in the body and leads to symptoms of poisoning. The first signs of this are a headache and a metallic taste on the tongue.

Diarrhea and nausea can also occur. Too much zinc can lead to a lack of iron, copper, chromium or manganese.

Are there any studies on zinc?

There are comparatively few meaningful studies on zinc intake. In Boston, researchers tested the effects of zinc on the immune system in 25 residents of an elderly care facility.

At the start of the study, all subjects had too low a zinc concentration in their blood. The subjects were divided into two groups. One group received five milligrams of zinc per day, and group two received 30 milligrams of zinc per day.

After the three month test period, the zinc levels in the five milligram group were almost unchanged. The group that took zinc in higher doses had significantly improved zinc levels.