How to Choose Vitamins and Dietary Supplements?
Vitamins and dietary supplements are not products that should be chosen based solely on attractive packaging, advertising, or the principle “the more ingredients, the better.”
The right choice begins with a much simpler question: Why do I need this dietary supplement?
Practical guide: how to set your goal, understand ingredients, and choose mindfully
Vitamins and dietary supplements are not products that should be chosen based solely on attractive packaging, advertising, or the principle “the more ingredients, the better.”
The right choice begins with a much simpler question:
Why do I need this dietary supplement?
To supplement your daily diet? During a period of increased physical activity? Due to a specific nutrient deficiency? Or simply because it seems that “everyone needs vitamins”?
These are very different reasons, and they do not always require the same solution.
In the European Union, dietary supplements are legally considered food, not medicines. Their purpose is to supplement the normal diet, not to replace a balanced diet or treat illnesses.
Therefore, a good starting point is not the question “What should I take?”, but rather “What do I want to achieve, and do I even need a dietary supplement?”
1. Start with a goal
Different people can have very different needs.
One person exercises regularly. Another has a restricted diet. A third wants to supplement their daily menu with a specific nutrient. In another case, a doctor may have identified a specific nutrient deficiency after medical tests.
That is why before choosing a product, it is worth asking yourself:
- what is my goal;
- what is my daily diet like;
- how active is my lifestyle;
- am I already taking other dietary supplements;
- am I taking any medications;
- has the need for a specific nutrient been confirmed by a doctor or blood tests.
A clear goal helps avoid randomly combining multiple products.
2. Multivitamin complex or a single specific nutrient?
This is one of the most common questions.
A complex can contain several vitamins and minerals in one product and may be a convenient daily solution in certain situations. However, more ingredients do not automatically mean a better product.
If you need one specific nutrient, a targeted product might be a much clearer solution.
Furthermore, when using multiple complexes simultaneously, the same nutrient can overlap across several products. For example:
multivitamins + separate mineral complex + sports product
may contain several identical ingredients. As a result, a person looks at each product individually but fails to notice the total daily dose.
3. Read the ingredient list, not just the product name
The name on the packaging helps you understand how the product is positioned. However, choices should be made based on the label.
Pay attention to:
active ingredients → their amount per daily dose → recommended daily dose → usage instructions and warnings
It is also important to understand whether you are already receiving the same nutrient from other dietary supplements.
EFSA evaluates the safety of individual micronutrients and establishes the Tolerable Upper Intake Level (UL) for many nutrients. This is the maximum level of long-term daily intake that is unlikely to pose a risk of adverse health effects.
Therefore, the principle “higher dose = better effect” is incorrect.
4. 100%, 200%, or 500% — what do the percentages mean?
Vitamin and mineral products often show the amount of nutrients as a percentage of the Nutrient Reference Value (NRV).
A high percentage may look impressive, but in itself, it does not mean that the product is higher quality or more suitable for a specific individual.
The body does not need to compete with the label. What matters is an appropriate amount for your specific need.
5. When exercising, you don't automatically need to take "everything for sports"
For a physically active person, nutrition and recovery are indeed particularly important. However, the foundation of athletic performance is still built on:
wholesome nutrition + adequate energy intake + fluids + sleep + recovery + properly structured training
A dietary supplement can complement this system, but it cannot replace it.
Before making a choice, an athlete should clarify their objective: is it to supplement their diet, support the intake of a specific nutrient, or address a deficiency diagnosed by a doctor?
The clearer the goal, the less need there is for random experimentation with different products.
6. “For prevention” shouldn't mean “I will take everything”
It is easy to arrive at the mindset:
I don't know if I'm lacking anything, so I'll take several vitamins just for prevention.
However, nutrients have dosage limits as well. Excessive intake of certain vitamins and minerals over a prolonged period can be undesirable. That is why EFSA has established safe upper intake limits for various nutrients.
A much more rational sequence is:
diet → need → blood tests or specialist consultation if necessary → suitable product
Not the other way around.
7. When is it better to consult a doctor or pharmacist first?
Special caution is required if:
A dietary supplement should not become a way to self-diagnose or treat a health issue.
If you have symptoms or suspect a deficiency, the proper starting point is a healthcare professional.
8. Check what the product actually promises
Wording plays a significant role in the advertising of vitamins and dietary supplements.
In the European Union, nutrition and health claims are regulated by Regulation (EC) No 1924/2006. Health claims must be clear, precise, and scientifically substantiated; misleading claims are not permitted.
Therefore, evaluate bold promises critically.
A product's quality should not be judged by how impressive the advertising text sounds.
A good product isn't one that promises the most. A good product is one whose formulation matches your actual need.
9. In Latvia, also check the product's origin and registration
In Latvia, dietary supplements must be registered in the Food and Veterinary Service (PVD) Dietary Supplement Register before being placed on the market. The PVD maintains a publicly accessible register where registered products can be checked.
This is a very practical quality control step for the buyer as well.
If you purchase a dietary supplement online, pay attention to who manufactured the product, who is responsible for it in the Latvian market, its composition, and the information provided on the label.
10. Form is a matter of convenience
Dietary supplements can come in:
There is no need to assume that one form is always “better.”
In many cases, what matters most is the composition, dosage, and whether the person can take the product regularly and according to instructions.
Convenience is also part of making the right choice. A product that you buy but do not take according to the intended schedule will not serve its purpose.
Practical selection algorithm
Before purchasing a dietary supplement, do seven things:
- 1Define your goal. Why do you want this product?
- 2Evaluate your diet. What are you already getting from food?
- 3Read the ingredient list. What active substances does the product contain?
- 4Check the daily dose. How much will you actually take?
- 5Compare with other products you are already taking.
- 6Read the directions for use and warnings.
- 7If you have a medical condition, take medication, or suspect a deficiency, consult a doctor or pharmacist.
This approach is much safer than choosing based on the principle “a friend takes it and likes it.”
Key takeaway
Choosing dietary supplements doesn't have to be complicated. But it must be deliberate.
First, set your goal. Then evaluate your diet and needs. Only then look at the specific composition, dosage, and product.
Dietary supplements can complement a wholesome diet, but they are not a substitute for it.
Not more vitamins. Not a larger number of ingredients. Not the most impressive packaging.
Rather, a correctly chosen product tailored to a specific need.
