BioStacks
Best for
Ingredients (4)
Vitamin C
100%Dose
80 mg
Target
25–200 mg
Form
Not listed
Iron
93%Dose
14 mg
Target
15–45 mg
Form
Not listed
Vitamin B12
4%Dose
10 mcg
Target
250–5000 mcg
Form
Not listed
Folic Acid
50%Dose
200 mcg
Target
400–800 mcg
Form
Budget
Other Ingredients (9)
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Coating (unspecified)Coating
Generic tablet coating declaration where the label does not itemize the coating's components; modern aqueous film coatings are typically cellulose-based (HPMC) with a plasticizer
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
How to Take It
Best taken in the morning
Best absorbed on an empty stomach with vitamin C. If it upsets your gut, take it with a light meal instead.
On an empty stomach
Keep it away from coffee, tea and dairy
Space it a couple of hours from Calcium, Zinc, Magnesium, Manganese and Green Tea Leaf Extract
On the label
ONE TABLET PER DAY WITH YOUR MAIN MEAL Swallow with water or a cold drink. Not to be chewed. Do not exceed the recommended intake. Ultra Iron may be used for as long as required. A regular intake is recommended. No preservatives or artificial colours No lactose or yeast Gluten free Suitable for vegans Ultra Iron is not tested on animals
Labels usually say “with food” because it's gentler on the stomach, not because it absorbs better. Fasted absorbs more — start there, and switch to a light meal if it bothers you.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
£3.85≈ $4.89
Cheaper than 99% of 544 vitamin C supplements
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Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).
This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.
The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.