Synthetic vs. Natural Vitamins: What the Label Tells You (and What It Doesn’t)

Synthetic vs. Natural Vitamins: What the Label Tells You (and What It Doesn’t)

Chris Manderino

Short answer: synthetic vitamins are made in a lab, by chemical synthesis or industrial fermentation. Whole food vitamins come from the foods themselves, like vitamin C from acerola cherry. The label is how you tell them apart: synthetic forms show up as chemical names such as ascorbic acid, cyanocobalamin or folic acid, and food sources show up as foods. On absorption, the honest answer is that for most vitamins, human studies find little difference. A few forms, like vitamin E and folate, are real exceptions. And the word "natural" on the front of a bag tells you almost nothing about which kind is inside.

Chris Manderino, founder of LyfeFuel. Former NFL fullback, formerly at Bariatric Advantage.

How I learned "natural" doesn't mean what most people think

There wasn't one moment. It's been an ongoing process of pulling back the curtain on how supplements get made, and asking simple questions: where do these ingredients actually come from? How does a vitamin get made?

The first time I really tuned in was when my family was living in New Zealand. I came across voices there like Dr Libby Weaver who were outspoken about getting nutrients from real food, and a handful of companies building their products around real food instead of synthetic vitamins. I'd never seen that in the US, at least not for complete nutrition. Herbal remedies have always taken that approach. But vitamins, minerals, protein powders and especially meal replacements were almost always built on synthetic vitamins and minerals, and it was close to impossible to find one made only from whole foods.

Many products wrap that same synthetic base in "natural" or "real food" marketing. That's what this guide will help you see through.

What are synthetic vitamins?

Synthetic vitamins are nutrients manufactured to match the vitamins found in food. They're used in most multivitamins, fortified foods and supplements because they're cheap to produce, stable and easy to dose precisely.

An isolated synthetic vitamin is just that one compound. A food brings the vitamin along with fiber, polyphenols, and other compounds that come packaged together in a whole plant.

Are synthetic vitamins made from petroleum?

Some are, and some aren't. It depends on the vitamin:

  • Synthetic vitamin E (listed as dl-alpha-tocopherol or dl-alpha-tocopheryl acetate, the "dl" is the tell) is made by chemical synthesis from petrochemical starting materials.
  • Vitamin C (ascorbic acid) is typically made from glucose, usually from corn, through fermentation and chemical steps.
  • Vitamin B12 is made by bacterial fermentation. The most common supplement form, cyanocobalamin, is a stable form produced during manufacturing.

So "made from petroleum" is true for some vitamins and not others. What they have in common is that they're made in a factory, not grown. Whether a petrochemical counts as "natural" is a matter of wording. It isn't what most people picture when they read "natural" on a label.

What are whole food vitamins?

Whole food vitamins come from concentrated, minimally processed foods: acerola cherry or amla for vitamin C, greens and algae for a range of vitamins and minerals, mushrooms for vitamin D. On a label, they're listed by the food they come from.

How to tell from the label

This is the easiest skill to learn, and it works on any supplement:

  1. Read the Supplement Facts panel, not the front of the bag. The front is marketing. The panel and ingredient list are regulated.
  2. Look at the words in parentheses next to each vitamin. Synthetic forms read like a science report: long strings of letters that are hard to pronounce. Food sources read like a grocery list: guava, mushrooms, chlorella, lemon. If you can picture it in a produce aisle, it's a food.
  3. Check the "Other Ingredients" line for a vitamin premix. Many products list a long superfood blend up top, then a full synthetic premix further down. The blend is real, but the vitamins usually come from the premix.

A concrete example. Two labels for the same nutrient:

Nutrient Synthetic label reads Whole food label reads
Vitamin C Vitamin C (as ascorbic acid) Vitamin C (from acerola cherry extract)
Vitamin B12 Vitamin B12 (as cyanocobalamin) Vitamin B12 (from a named food or fermented source)
Folate Folate (as folic acid) Folate (from broccoli, lentils or another named food)
Vitamin E Vitamin E (as dl-alpha-tocopheryl acetate) Vitamin E (as d-alpha-tocopherol or mixed tocopherols, from sunflower or another named source)

Words like "natural," "real food," "superfood" and "clean" on the front of a package aren't defined for vitamin sourcing. The panel is the only place that tells you.

Are food based vitamins better absorbed? What the research says

This is where a lot of supplement marketing overreaches, so here's the evidence as it stands:

  • Vitamin C: a six-week human trial comparing vitamin C from kiwifruit with a synthetic vitamin C tablet found no difference in blood, urine, white blood cell or muscle levels (Carr et al., Nutrients, 2013). A review of the field found that most animal studies favored food-derived vitamin C, but human steady-state studies found no difference (Carr and Vissers, Nutrients, 2013).
  • Multivitamins: a 2026 study of 62 adults found an organic food-based multivitamin and a synthetic one "functionally comparable" (Current Developments in Nutrition, 2026).
  • Vitamin E is a real exception. The natural form (d-alpha-tocopherol) is retained by the body roughly twice as well as the synthetic form (dl-alpha-tocopherol) in human studies (Burton et al., American Journal of Clinical Nutrition, 1998). US labeling rules already treat them differently.
  • Folate: folic acid and the active form 5-MTHF behave differently in the body, and a 2025 randomized crossover trial found higher folate levels after 5-MTHF than after folic acid.

So the bigger lesson is that the specific form matters more than the word "natural." For most vitamins, a well-made synthetic and a food source perform similarly in humans. For a few, the form on the label makes a real difference. That's one more reason to read the panel.

"Tired despite doing everything right"

This is the person I think about most. They've followed the health advice and the influencers. They've bought a lot of supplements, tried different workout plans and diets. They believe they eat really well, and they still feel flat.

What's often missing is scrutiny. Artificial ingredients and things that don't serve you creep into a "healthy" diet and supplement routine more easily than people expect. The fix usually isn't another product. It's looking harder at what's already in the cabinet and on the plate.

Here's the belief that puts me at odds with most of the supplement industry: we've made nutrition far more complicated than it needs to be. You don't need dozens of supplements to cover baseline needs. Food should come first, and anything else is there for convenience, held to the same standard you'd hold a healthy meal to.

There's also no hacking your way out of poor nutrition. Longevity protocols and biohacking can't do much if the foundations aren't in place: nutrition, sleep, daily movement and managing stress. You don't need to track every macro or wear three devices. Simpler is better. And when a specific supplement or protocol is needed, it should be data-driven: test to find your baseline, know what you're solving for, then retest to see if it actually helped.

Where LyfeFuel stands

If you use the label method above on our Essentials Shake, here's what you'll find. Each scoop is real whole foods, including organic greens, a six-berry blend, flax, spirulina and five probiotic strains, plus essential vitamins and minerals. Some of those vitamins and minerals are synthetic forms, like folic acid and cyanocobalamin, alongside methylcobalamin and Vitashine D3. We print every one of them on the label, and Eurofins tests every batch for pesticides, heavy metals, microbials and label accuracy.

We'd rather you read our label closely than take our word for it. That's the whole point of this guide.

Frequently asked questions

What is the difference between synthetic and natural vitamins?

Synthetic vitamins are manufactured by chemical synthesis or industrial fermentation to match the vitamins in food. Natural or whole food vitamins come from concentrated foods such as acerola cherry, greens or algae. On a label, synthetic forms appear as chemical names and food sources appear as foods.

Are whole food vitamins better absorbed than synthetic vitamins?

For most vitamins, human studies find little difference. Natural vitamin E is a clear exception, retained roughly twice as well as synthetic vitamin E, and folate forms differ too. The specific form on the label matters more than whether it's called natural.

Are synthetic vitamins made from petroleum?

Some are. Synthetic vitamin E is made from petrochemical starting materials. Vitamin C is typically made from corn glucose, and vitamin B12 is made by bacterial fermentation.

How can I tell if my supplement uses synthetic vitamins?

Read the words in parentheses next to each vitamin on the Supplement Facts panel, then check the Other Ingredients line for a vitamin premix. Chemical names such as ascorbic acid, cyanocobalamin, folic acid or dl-alpha-tocopheryl acetate are synthetic forms. Named foods are whole food sources.

Are organic vitamins better?

"Organic" describes how ingredients were grown, not the form of the vitamin. Read the panel to see which forms are actually inside.

Does LyfeFuel Essentials contain synthetic vitamins?

Yes, alongside real whole foods. The current Essentials Shake combines organic greens, berries, flax, spirulina and probiotics with essential vitamins and minerals, some in synthetic forms such as folic acid and cyanocobalamin. Every form is printed on the label.

Related articles

Sources

  • Carr AC, et al. "A Randomized Steady-State Bioavailability Study of Synthetic versus Natural (Kiwifruit-Derived) Vitamin C." Nutrients, 2013;5(9):3684.
  • Carr AC, Vissers MC. "Synthetic or Food-Derived Vitamin C: Are They Equally Bioavailable?" Nutrients, 2013;5:4284.
  • Burton GW, et al. "Human plasma and tissue alpha-tocopherol concentrations in response to supplementation with deuterated natural and synthetic vitamin E." American Journal of Clinical Nutrition, 1998;67(4):669.
  • Organic vs. synthetic multivitamin trial. Current Developments in Nutrition, 2026. doi:10.1016/j.cdnut.2026.107676
  • 5-MTHF vs. folic acid randomized crossover trial, 2025. PMC12499688
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