I get a version of this email at least once a week.
“Thank you for your product. Can I ask what the vitamins are derived from? I try to only take natural supplements.”
It is a completely fair question, and it deserves a completely honest answer — one that the supplement industry has spent decades not giving.
The honest answer is that almost every vitamin in almost every supplement on the market — including the ones marketed as “natural,” “whole food,” or “food-based” — is manufactured in a laboratory. Yours. Ours. The premium brand at Whole Foods. The bargain brand at the drugstore. The influencer-endorsed capsule that costs three times as much as everything else on the shelf. All of them.
That is not a criticism of the industry. It is the physical reality of how modern vitamins are made. But the way the industry markets around this reality has created an enormous amount of consumer confusion, and it has caused a lot of thoughtful shoppers to pay premium prices for a story that does not hold up under examination.
Let me walk you through what is actually going on, so you can walk into any supplement aisle armed with the truth.
What “natural” actually means on a supplement label
The word “natural” in supplement marketing almost never means what consumers assume it means. It does not mean picked from a plant. It does not mean squeezed from an orange. It does not mean extracted from a food source.
What it usually means is: “the molecular form of this vitamin that happens to occur in food, produced synthetically in a factory.”
That is a real distinction from the molecular form that does not occur in food — but it is a much smaller distinction than the marketing implies. Both versions are made in a lab, by the same kinds of chemistry, in the same kinds of facilities. The one that gets to wear the “natural” label just happens to be structurally identical to what your body would encounter in food.
Take vitamin C as a concrete example. Almost every vitamin C supplement on the market — including the ones marketed as “whole food,” “food-derived,” or “natural” — is ascorbic acid. Ascorbic acid is manufactured through a chemical process starting from corn syrup or a similar carbohydrate feedstock. The “whole food” versions are usually the same ascorbic acid with a small amount of citrus fruit powder (like acerola cherry or amla) added on top for label appeal. The bulk of what your body is absorbing is still lab-synthesized ascorbic acid.
Take methylfolate, which many wellness brands sell at a premium as the “natural” form of folate. Methylfolate is manufactured through chemical synthesis. Folic acid is manufactured through chemical synthesis. Both are lab-made. The difference between them is molecular structure, not source. For a deeper look at why the methylated version causes real problems for a large subset of people — despite being marketed as the “better” choice — read our post on why methylated B-vitamins make some people anxious.
Take methylcobalamin, marketed as the “natural” and “bioidentical” form of B12. Methylcobalamin is manufactured by fermenting bacteria and then further processing the result in a lab. Cyanocobalamin, the form marketed as “synthetic,” is also manufactured by fermenting bacteria and then further processing the result in a lab. Both are lab-made. The difference is which small chemical group is attached to the cobalt atom at the center of the vitamin molecule. If you have been told you need methylated B-vitamins because you have MTHFR, our post do I really need methylated B-vitamins if I have MTHFR walks through the honest answer.
The specific case of B-vitamins
For the B-vitamin family, essentially every form you will find on a supplement shelf is produced through one of two industrial processes:
Chemical synthesis — the vitamin molecule is built from smaller precursor chemicals in a series of controlled reactions. This is how thiamine (B1), riboflavin (B2), niacin (B3), pantothenic acid (B5), and pyridoxine (B6) are typically made. The starting materials are basic industrial chemicals, most commonly derived from petroleum-based precursors.
Bacterial fermentation — bacteria are cultivated in large tanks and coaxed into producing the vitamin as part of their metabolism. This is how B12 is made. The final product is then purified and processed into whichever form (cyanocobalamin, methylcobalamin, hydroxocobalamin) the manufacturer needs.
In both cases, the finished vitamin molecule is chemically identical to what your body would encounter from food. The difference is that in food, the vitamin is bound up with other food compounds. In a supplement, it is isolated. That is what makes supplements work — the isolation is the entire point.
The vitamin C example, in more detail
Vitamin C is one of the clearest illustrations because the marketing on this vitamin is particularly aggressive.
Nearly all commercial vitamin C is produced through the Reichstein process, which starts with glucose (from corn syrup or a similar source) and runs it through several fermentation and chemical conversion steps to produce ascorbic acid. This process has been in industrial use since the 1930s. Every mainstream vitamin C supplement — regardless of price point or marketing angle — is using ascorbic acid produced this way.
Some brands add a small amount of freeze-dried fruit powder (usually acerola cherry, amla, camu camu, or rose hip) to their ascorbic acid so they can market the product as “whole food” or “food-based.” The math on these products is worth examining. A typical “whole food” vitamin C supplement might contain 500 milligrams of vitamin C per serving. If that same serving contains 100 milligrams of acerola powder, and acerola is naturally about 1.5 percent vitamin C by weight, then the fruit powder is contributing about 1.5 milligrams of the total. The other 498.5 milligrams is ascorbic acid manufactured through the same process every other brand uses.
That is not a scam. The fruit powder is a real ingredient and provides some bioflavonoids and cofactors. But the framing that “our vitamin C comes from food and theirs comes from a factory” is not accurate. Most of the vitamin C in either bottle came from the same factory.
Why this framing was created
The “natural versus synthetic” distinction in supplement marketing emerged in the mid-twentieth century, as the natural foods movement started to push back against processed food. The critique was legitimate — heavily processed food is often nutritionally inferior to whole food, and consumers deserve to know the difference.
But the supplement industry noticed that the language of “natural” was a powerful marketing lever, and started applying it to products that did not really fit the description. Ascorbic acid became “vitamin C from acerola.” Methylfolate became “the natural form of folate.” Isolated vitamin E became “food-based.” The words were technically defensible on a legal review — the compound really does occur in food — but the consumer takeaway was misleading.
By the 2010s, this had become such a dominant framing that most shoppers walked into a supplement aisle assuming that some products were made in factories and other products were made in fields. Almost none of them are made in fields. The distinction that matters is not where the vitamin came from. It is what molecular form it is and what your body does with it.
What actually matters when choosing a vitamin
Once you stop asking “is this natural or synthetic,” a much better set of questions comes into view.
What molecular form of the vitamin is it? For B-vitamins in particular, this is the most important question. Methylated forms behave differently in your body than non-methylated forms. Some people tolerate one and not the other. That distinction matters far more than whether the vitamin came from a lab or an orange.
What is the dose? Many supplements deliver five to fifty times the daily requirement. For some people this is fine. For sensitive people, it is often the cause of the problems they blame on “supplements not working for them.”
What else is in the bottle? Is the ingredient list short and clean, or full of fillers, artificial colors, and vague “natural flavors” that could contain almost anything? This is where “clean” actually matters.
Is the delivery format one you can control? Liquid drops let you titrate. Capsules do not. For sensitive systems, the ability to start with a lower dose can be the difference between a supplement that works and one that gets returned.
Is the manufacturer transparent? Do they publish Certificates of Analysis? Do they follow Good Manufacturing Practices? Do they third-party test their finished products? Are they willing to answer questions like the one that started this post?
Those are the questions that separate a supplement worth taking from one that is not. “Natural versus synthetic” is not on the list.
Where Herb-Science stands
We are not going to pretend our B-vitamins were extracted from a leafy green. They were not. They were manufactured through the same industrial processes every other reputable B-vitamin uses. That is the honest answer, and we are willing to give it because we do not think our customers should have to buy into a story to buy our product.
What our B-vitamins are: non-methylated forms in moderate doses, delivered as liquid drops in a base of vegetable glycerin and purified water. No fillers. No artificial colors. No hidden “natural flavors.” No mega-dose overstimulation. Every batch third-party tested and USP grade. If that fits what your body needs, our Liquid B-Complex is where most of our customers start.
Thanks for asking the honest question. More people should.