Fundamental Stages of Dietary Supplement Testing

To provide quality and reliable products to consumers, the dietary supplement manufacturer should pass the product through various tests. The strict quality control process would check its purity, composition, and strength throughout the cycle. There are three reliable tests for dietary supplement products: raw material testing, finished product testing, and stability testing.

Raw Material Testing

The testing process of dietary supplement testing begins from the first stage by the consumer. It is termed as raw material testing in which each raw material used in the manufacturing of supplements is taken. Then, the raw material is tested for three main categories: identity, purity, and strength. It ensures the quality of the supplement product as everything begins from the raw materials which need to be top-notch. After that, the raw material should be tested for its composition related to incoming products and mainly contaminates. As contaminants are dangerous for quality and ruin the end product, it should be filtered first if any contamination is present there. Contamination may cause adulteration of the finished product.

Apart from this, the client should also check incoming ingredients’ identity, which would be added in the next process. An in-house solution could test this by using two techniques. One is Spectroscopic and other chromatographic methods. The raw material should be filtered using various methods, and the liquid should be free of any contamination. At last, when you are done with testing all the raw material specifications, then you can allow the material for integration to the next processes for a dietary supplement.

Finished Product Testing

When all raw material tests are passed, the product is sent to the next stage of the process. The second stage of dietary supplements is known as finished product testing. This time each batch of integrated material is sent for finishing product testing in which the composition of the following categories is seen. They include purity, strength, identity, limits on contamination and design, etc. It would help the client know the quality, and if it is on the opposite side, it will help them find an alternative with better quality.

Moreover, every checked finishing product would be characterized according to certain criteria for every raw material. It should pass that criterion for all fields such as identity, strength, composition, contamination limits, etc.  There would be testing acceptance criteria set for each category, which each specific product needs to pass before allowing for the next process.


Stability Testing

In the last and third stage of dietary supplement product testing, the product needs to pass the stability test. The primary purpose and benefit of doing a stability test is to verify that no unexpected organoleptic changes occur within the time of the process. This would also indicate clearly that the supplement product has met the requirements of claimed active ingredients. The process helps the consumer know the suitable shelf life, which can meet the needs of the end-users and buyers. However, the stability test could be affected by several factors. They are oxygen, hydrogen, oxidation, water activity, and metallic ions, etc. These environmental factors may disturb the real working of the process, so make sure the process is kept away from them.

Once you are done with product testing, you can create a certificate of analysis about the desired dietary supplement products to show the companies and retailers as verification for quality. This stability testing proclaims the specification of a dietary product, and every supplement must pass two previous tests and marks to reach this last stability test.

Benefits of testing Dietary Supplements

Dietary Supplements are an essential part of keeping the body healthy and fit. Your body needs minerals and vitamins in specific quantities to function and more times than not even people who eat healthy are deficient in one of these vitamins and minerals. To overcome that deficiency, doctors recommend various dietary supplements.

Since these dietary supplements play an important role in the overall health of the body and immune system, its important to make sure that the dietary supplement you are taking is recommended by a doctor. It is also crucial that the dietary supplement has been well tested by a trusted company. This makes the use of these supplements safe and healthy.

One thing that is important to note is that no dietary supplements is not a cure to any disease or illness and any brand that advertises it as such should be avoided.  A quality product from a well reputed company will make no such claims to its customers. Dietary supplements are only taken to promote health and fulfil deficiencies of the body.

A few things to make sure before you start taking the supplement is to check the label and table of ingredients. Make sure the items listed there are safe and if there is anything out of the ordinary consult a doctor. To ensure that ingredients used in your dietary supplement are healthy for you make sure to research about it. More often than not it will only help you become more aware than anything else. Finding out more about the supplement through trusted reviews from your peers or the internet can help people feel more confident about the supplement and its effects.


For a quality product, these three testing stages are critical to win your client or retailer. With the certification of analysis, your supplement with be labeled with a verification card, which would create trust between consumers and buyers. All these three tests need to be done with full care and with precise accuracy so that the results are not on the wrong side. Completing the product test guarantees that the supplement is made up of quality raw material with no contamination. The identity, purity must be above acceptance level to pass the test.

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