How Do You Decide Which Supplements Are Right for You?

Bona Valetudo Author Conversation

After learning about one ingredient, the bigger challenge is knowing how to think about all the others.

You just learned about taurine. Now comes the harder question.

Taurine may or may not belong in your supplement routine. But it is only one option among thousands.

How do you decide what belongs? How many supplements make sense? How do you know whether products overlap, whether the dose is meaningful, whether a claim is mostly marketing—or whether you need the product at all?

Those questions are difficult to answer one supplement at a time.


David, Bona Valetudo founder and author
David, Bona Valetudo founder and author

We asked Bona Valetudo founder David to step back from individual ingredients and talk about the bigger problem: how people can learn to make better supplement decisions for themselves.

David spent more than a decade in the supplement industry, including helping train supplement-industry professionals to guide consumer decisions. The conversation below has been edited for clarity and readability.


The bigger question behind every supplement

Bona Valetudo

You spent years in the supplement industry. What problem kept coming up again and again?

David

People were surrounded by information, but they still did not have a dependable way to make decisions. They could learn a fact about an ingredient or hear that a product was popular and still be left asking whether it made sense for them.

Inside the industry, I helped train professionals to guide those conversations. Over time, I saw that the useful part was not simply knowing more products. It was having a process: understand the person's goals, put the options into useful categories, examine the product, set expectations, and reassess.

Bona Valetudo

Why isn’t “What supplements should I take?” necessarily the best starting question?

David

Because it begins with products instead of purpose. A better starting point is: what am I trying to support, and is a supplement relevant to that goal? That shift makes it easier to separate a genuine reason from a trend, a persuasive claim, or somebody else's routine.

Bona Valetudo

What do you mean when you say people should build their own supplement plan?

David

I do not mean that everyone needs a large stack—or any particular set of products. A personal plan begins with your nutrition, your goals, your circumstances, and the questions you need to resolve.

Goal-based examples can be useful, but the examples should reveal the reasoning rather than become a list to copy. The point is to understand why a category might be considered, how to compare the choices, and what would make a product earn—or lose—a place in your routine.

Bona Valetudo

How do you think about “How many supplements should I take?”

David

There is no useful universal number. I would begin by looking at three areas: nutritional gaps, specific goals, and any optional area someone wants to explore for optimization. Even then, each possibility still has to be examined.

That changes the task from filling a shelf to narrowing toward a manageable plan. For one person, the answer may be very small. Another may have several clearly defined reasons. The number comes after the reasoning, not before it.

Bona Valetudo

How do people narrow thousands of choices?

David

Categories do a lot of the first sorting. Instead of comparing thousands of products at once, you identify the kind of support you are considering, then use decision frameworks to compare only the relevant options. The category gives you a smaller field; the label, ingredients, dose, quality, transparency, and fit help you narrow it further.

Bona Valetudo

What does supplement literacy mean?

David

Supplement literacy is not memorizing products. It is knowing how this distinct category of concentrated nutrition can—or cannot—fit into your own life. Supplements are not ordinary food shopping, and they are not medication. They require their own kind of consumer judgment.

That means reading beyond the front of the package. What is actually disclosed on the label? Is the dose meaningful in context? Are individual ingredients clear? What does the company show about quality and testing? Which statements are useful information, and which are mostly marketing?

Supplement literacy is knowing how to make better decisions for your own life—not memorizing a catalog of products.

Bona Valetudo

Why do people waste money on supplements?

David

Often there was never a clear purpose for the purchase. A recommendation sounds convincing, a new trend appears, or somebody shares a stack—and products begin to accumulate. Ingredients can overlap, several products may be trying to do the same job, and marketing makes each addition sound necessary. Giving every product a defined reason makes it easier to see what does not belong.

Bona Valetudo

How do you know whether a supplement plan is actually working?

David

Start by deciding what you reasonably expect and when you would expect to notice it. Then give the routine enough consistency to observe it fairly. Without an expectation, a timeframe, and consistency, it is very hard to interpret the result.

After that comes reassessment. Is the product doing what you expected, or are you continuing from habit? A supplement plan should be something you can evaluate—not a collection you inherit forever.

Bona Valetudo

Why should the process change as someone’s life or goals change?

David

A list is tied to a moment. Your goals, nutrition, health context, and circumstances will change, and new products will appear. If you understand the process behind the decision, you can return to it whenever the situation changes instead of depending on the next generic answer.

Bona Valetudo

What did you learn from training people inside the industry?

David

The best conversations simplify before they recommend. They clarify the goal, organize the choices, and help someone understand the tradeoffs. The industry can feel impossibly crowded from the outside, but practical systems make it navigable. Consumers should not need to become industry insiders to use those systems.

Bona Valetudo

Why did this eventually become a book?

David

Because the same questions kept returning, and a product-by-product answer never solved the larger problem. I wanted to bring the decision frameworks together in one practical resource—something readers could use to build a plan, understand the choices inside it, see whether it is working, and change it when life changes.

The Supplement World Decoded book shown from the front and back
The Supplement World Decoded brings David's supplement decision frameworks together in one practical resource.

That thinking eventually became The Supplement World Decoded.

For readers who want to go deeper, the book brings the decision-making frameworks together in a practical system for building, evaluating, and adjusting a supplement plan.

See how the full decision system works →

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