What Actually Makes One Supplement Better Than Another?
Two bottles of vitamin C can list the same number of milligrams per serving and still be two very different products.
The Supplement Facts panel tells you what's in the bottle. It doesn't tell you where those ingredients came from, what form they're in, how they were extracted or what happened to them before they got to your kitchen bench. Those are the things that decide how much of it your body can actually use.
I say it often - bioavailability beats dose. A big number on a label doesn't mean much if most of it passes straight through you. We don't want that!
Global Healing, the brand I stock more of than any other, recently published a piece by founder Dr Edward Group on this exact question. It's close to my heart, so here's my take on it.
1. It starts with the form of the ingredient
"Vitamin B12" on a label can mean several different compounds.
The most common in supplements is cyanocobalamin, a synthetic form the body has to convert before it can use it. Methylcobalamin and adenosylcobalamin are the two active forms the body uses directly - methylcobalamin mainly within the cell itself and adenosylcobalamin inside the mitochondria, where our cells make energy. Hydroxocobalamin is a naturally occurring form that the body can convert into both (Paul, C. & Brady, D.M. (2017)).
Global Healing's liquid Vitamin B12 combines methylcobalamin, adenosylcobalamin and hydroxocobalamin, so rather than leaning on one pathway it supports several. B12 helps maintain normal energy production and normal nervous system function, and in some people it's a nutrient worth paying attention to.
This is one I take myself, first thing every morning. That lines up with Global Healing's own directions - once a day in the morning or early afternoon, ideally on an empty stomach, holding it in the mouth for 15 seconds before swallowing. B12 plays a role in energy production, so the morning just makes sense to me.
Shop Global Healing Vitamin B12 HERE
So comparing two supplements by ingredient name and amount only gets you part of the way. The form matters.
2. How it's made matters as much as what's in it
Once the raw ingredient is chosen, extraction, processing and formulation all shape the finished product. Three examples from the Global Healing range show what that looks like in practice.
- Valerian - Rather than buying in a ready-made extract from another manufacturer, Global Healing starts with raw valerian root and runs it through its own Raw Herbal Extract process. The aim is to carry as much of the whole plant's complexity as possible into the bottle. Valerian has traditionally been used to support relaxation and restful sleep. Shop Valerian HERE
- Oxy-Powder - Many digestive products rely on stimulant herbs. Oxy-Powder takes a different route, using ozonated magnesium oxides and citric acid, which react in the digestive tract to release oxygen, while the magnesium supports gentle, regular elimination. Shop Oxy-Powder HERE
- Oregano Oil - This isn't simply oregano oil in a capsule. It's paired with cold-pressed extra virgin olive oil as a carrier, peppermint oil to make it easier to take and cayenne extract, which Global Healing includes to support absorption. Anyone who has tasted straight oregano oil will understand why the peppermint is there! Shop Oregano Oil HERE
3. The part you never see - delivery
A nutrient has to survive the trip. It can be the right form, beautifully sourced and carefully made, and still fall short if your body can't take much of it up. This is where a delivery system earns its keep, and it's the part of a supplement you can't see on the label at all.
Global Healing's new Glutathione is a good example of all of this in one bottle, and it has just landed at our HQ.
Glutathione is a molecule made of three amino acids - glutamine, cysteine and glycine. It occurs naturally in every cell of the human body and it's often called the master antioxidant.
Here's the bit that matters. Glutathione comes in two states. Reduced glutathione (GSH) is the active one, able to donate electrons and neutralise free radicals. The oxidised form, GSSG, has already done that job. A label saying "glutathione" doesn't always tell you which one you're getting. This formula delivers 1,000mg of reduced active glutathione per teaspoon.
Then there's how it gets in. Global Healing built it on their MicroSomal delivery system, a lipid-based process that carries nutrients in ultra-fine particles, which they position as an advanced alternative to traditional liposomal glutathione. IV-strength, taken by mouth. No needles, no appointments.
Global Healing advise it isn't recommended for children, or if you are pregnant or breastfeeding. Always read the label and follow the directions for use.
Shop the new Global Healing Glutathione HERE
4. Quality adds up
Quality is cumulative. Sourcing, formulation, processing and manufacturing are links in one chain, and the finished product is only as good as the weakest of them.
A beautiful organic herb can be let down by careless processing. And the most sophisticated factory in the world can't rescue a poor raw ingredient.
Global Healing calls its approach "Make It Better". When there's a meaningful way to improve an ingredient, formula or process, they take it, even when it costs more or takes longer. Their delivery system has been in development for over two decades and they manufacture in a facility they built themselves. None of that shows up on a Supplement Facts panel.
Questions worth asking of any supplement
Whatever brand you're looking at, these are good places to start:
- What form is each nutrient in, not just how much?
- Where do the raw ingredients come from?
- How are the herbs extracted, and does the brand do it themselves?
- What else is in the bottle - carriers, fillers, flavours - and why is it there?
- Is the brand open about all of this when you go looking?
An honest note to finish
None of this means the most expensive bottle is automatically the right one for you. Bioindividuality is the principle that every person has unique genetic, biochemical and lifestyle needs, so no single supplement works best for everyone.
The science isn't always neat either. A review of vitamin C research found synthetic and food-derived vitamin C appear to be similarly bioavailable in humans, though whole foods bring a whole lot of other nutrients along with them (Carr, A.C. & Vissers, M.C.M. (2013)). Nutritional science is a fledgling science, and it's likely some of what we believe today will be challenged in years to come.
What I do know is that supplements won't dig you out of a poor diet. Wholefood first, always. Then, when you do supplement, choose products where the thinking behind every decision is as good as the ingredients themselves. I only stock what I use myself, and Global Healing has earned its place on my shelf.
Shop the new Glutathione | MicroSomal IV-Strength HERE
Or EXPLORE the whole Global Healing range at Sage Wellbeing HERE
Katie Pinnick | Founder | Sage Wellbeing Co.
References
- Group, E. (2026) 'What Makes One Supplement Better Than Another?', Global Healing, 11 September. Available at: https://globalhealing.com/blogs/education/what-makes-one-supplement-better-than-another
- Paul, C. & Brady, D.M. (2017) 'Comparative Bioavailability and Utilization of Particular Forms of B12 Supplements With Potential to Mitigate B12-related Genetic Polymorphisms', Integrative Medicine: A Clinician's Journal, 16(1), pp. 42-49.
- Carr, A.C. & Vissers, M.C.M. (2013) 'Synthetic or Food-Derived Vitamin C - Are They Equally Bioavailable?', Nutrients, 5(11), pp. 4284-4304.
The information provided is for general educational and wellbeing purposes only and is not intended as medical advice, diagnosis or treatment. It should not replace advice from a qualified healthcare professional. Always seek professional guidance regarding any health concerns, medical conditions, medications, supplements, diet or exercise changes. Individual needs vary, and you should make health decisions appropriate to your personal circumstances.
