Herbalife Xtra-Cal: Calcium, Vitamin D & Bone Health, Explained
By Dogus Dilan, Herbalife Independent Wellness Coach · Last updated 12 August 2026
Three Xtra-Cal tablets provide 999mg of calcium (125% RI) alongside magnesium, zinc, copper and manganese — genuinely useful for bone and teeth maintenance. But its 2.3µg of vitamin D (46% RI) is worth putting in context: it’s dosed to support calcium absorption within this specific product, not to meet the NHS’s separate, general recommendation of 10µg of vitamin D daily for UK adults, especially between October and March. If you’re relying on Xtra-Cal as your main source of vitamin D, you’re likely falling short of that target.
Why Calcium Needs Vitamin D — and Why the Amounts Here Differ
Vitamin D’s job in this formula is specific: it helps support normal calcium absorption and normal blood calcium levels, and contributes to normal muscle function. That’s genuinely useful within the context of a calcium supplement.
But NHS guidance is separate and more general: everyone in the UK should consider a 10µg vitamin D supplement daily, particularly from October to March when there isn’t enough sunlight for the body to produce its own. At 2.3µg per daily dose, Xtra-Cal provides less than a quarter of that broader target — it’s a calcium supplement with a supporting amount of vitamin D, not a vitamin D supplement.
Nutritional Information
Per daily dose (3 tablets). Servings per container: 30 (90 tablets).
Who Should Consider Xtra-Cal
Calcium needs are genuinely higher for some groups — post-menopausal women face a steeper decline in bone density due to reduced oestrogen, and anyone following a dairy-free or vegan diet may find it harder to reach their calcium target through food alone. If you’re in either group, or simply know your dietary calcium intake is low, this is a reasonable way to close that gap. If you’re specifically managing diagnosed osteoporosis or low bone density, that’s still one to manage with your GP alongside any supplement.
If You’re Also Taking Formula 2
Worth knowing: Formula 2 Vitamin & Mineral Complex Women also contains calcium (300mg per 2-tablet dose). If you’re taking both, your combined calcium intake is worth being aware of — not because either product is unsafe alone, but because stacking supplements without checking totals is exactly the kind of thing worth a quick conversation with your GP or pharmacist, particularly if you’re also getting meaningful calcium from your diet (dairy, fortified plant milks, leafy greens).
Ingredients
Calcium carbonate, bulking agents (microcrystalline cellulose, cross-linked sodium carboxymethyl cellulose), calcium salt of citric acid, magnesium oxide, anti-caking agents (fatty acids, silicon dioxide, calcium salts of fatty acids), corn starch, glazing agents (hydroxypropyl methyl cellulose, glycerol), colour (calcium carbonate), zinc sulphate, cupric gluconate, manganese sulphate, cholecalciferol (vitamin D).
How to Use It
💊 1 Tablet, 3 Times a Day, With Meals
Take one tablet with each main meal — spreading the dose across the day rather than taking all 3 at once is standard practice for calcium supplements generally, since the body can only absorb a limited amount at one time.
Frequently Asked Questions
Does Xtra-Cal give me enough vitamin D on its own?
How much calcium does Xtra-Cal provide?
Can I take Xtra-Cal with Formula 2?
Who should consider taking Xtra-Cal?
How should I take it?
Related Reading
Sources & References
- NHS — “Vitamin D.”
- Herbalife Nutrition — official UK product label and nutritional information.
This is a food supplement. Do not exceed the recommended daily dose. Store out of reach of young children. If you are pregnant, breastfeeding, taking medication, or have a medical condition, consult a healthcare professional before use.
Dogus Dilan — Herbalife Independent Member / Wellness Coach
Writes every guide on this site from official Herbalife product labels and published data rather than marketing copy. As a Herbalife Independent Member, the products discussed here are sold through this shop.