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Calcium is an essential mineral that is crucial for healthy bones & teeth, as well as muscle function & nerve signalling.
While calcium is found in many foods, some people may not consume enough through diet alone - particularly those who are lactose intolerant or vegan.
In such cases, calcium supplements can be a helpful way to ensure adequate intake. However, with so many different types and brands of calcium supplements available on the market, it can be challenging to know which one to choose.
So we did the research for you. In this guide we'll explore the benefits of calcium, things to consider when choosing a supplement & our top 5 options to consider trying.
What Is Calcium?
Calcium is the most abundant mineral in the body that's found in a variety of foods, including dairy products, leafy greens, fish, and fortified foods.
Around 99% of calcium is stored in the bones and teeth, with the remaining 1% is found in the bloodstream, where it helps to regulate a number of important bodily functions.
Calcium is particularly important for maintaining strong bones & teeth, as well as also being essential for muscle function, nerve transmission & blood clotting. It also plays a role in hormone secretion & enzyme activation.
A deficiency in calcium can lead to weakened bones and teeth, as well as an increased risk of bone fractures & osteoporosis. It can also cause muscle cramps, convulsions & abnormal heart rhythms.
It's therefore important to consume enough calcium - ideally through a healthy balanced diet or appropriate supplementation in order to support daily health & wellbeing.
Calcium Benefits:
Bones
Teeth
Immunity
Joints
Muscles
Metabolism
Calcium Supplements: 2025 Buyers Guide
Calcium supplements come in many different forms, ranging from tablets and capsules, through to drinks, powders, and even gummy vitamins.
Let's take a closer look at some of the other important things to consider when it comes to shopping for a quality product...
What To Look For:
1
Potency
When choosing a calcium supplement, look for the amount of “elemental” calcium in each capsule or tablet.
Elemental calcium is the amount of calcium that your body absorbs. For example, a 500mg tablet of calcium carbonate may contain 100mg of elemental calcium.
Always consult with your GP about the right calcium dosage for you if you have any concerns about starting any supplement regime.
2
Calcium Sources
The type of calcium used in a supplement will significantly affect its absorption & effectiveness.
The most commonly used forms are calcium carbonate & calcium citrate.
Carbonate is typically cheaper but is more difficult for your body to absorb. Some people also experience digestive-related side effects.
Calcium citrate is widely considered to be the more effective option & worth paying more for.
3
Other Ingredients
Calcium supplements often include other important nutrients that help boost the effectiveness of calcium, including vitamin D, magnesium, vitamin C & zinc.
Taking all of these nutrients in combination as part of a calcium complex supplement can help to improve calcium absorption & utilisation by the body.
This can often significantly improve results, and it's also better value too as you're getting additional supporting nutrients for no extra cost.
What To Avoid:
Fillers & Additives
Look for supplements that are made by reputable manufacturers and that have been independently tested for purity and quality. Also read the back label of any supplement carefully and watch out for any synthetic fillers or additives.
Avoid any unnecessary ingredients or bulking agents such as magnesium stearate, titanium dioxide, starch, iron oxide, or microcrystalline cellulose which don't offer any nutritional benefit.
By choosing a supplement without fillers, you can ensure that you are getting a pure, potent, and safe product that will support your health and wellbeing.
Your Calcium Supplement Checklist:
GMP Standards
Buy from a reputable brand that submits their products for multiple rounds of quality testing, from raw ingredients to finished product. Look for products manufactured to the GMP code of conduct. This is a strict set of manufacturing and quality processes that help to ensure you're getting a premium quality, safe and effective product. Look for a manufacturer which adheres to GMP practices and displays this on their website or packaging.
Money Back Guarantee
It's important that any manufacturer stands behind their product and is willing to give your money back if you aren't happy with the results. Many manufacturers now offer an extended returns policy or 100% satisfaction guarantee for as long as 30 or 60 days. This gives you plenty of time to try the supplement "risk free" to make sure it's what you're looking for.
Our #1 Pick For 2025: Calcium Complex by Purolabs
For its ultimate combination of pure & potent calcium citrate with a comprehensive selection of supporting ingredients, Puro Calcium Complex is going to be the best bet for most people.
Each serving delivers a potent dose of calcium citrate plus vitamin c, vitamin D, magnesium & zinc, in a high quality formula that offers outstanding value for money and covers all your bases.
This product is also 100% free from sketchy additives, fillers & bulking agents that are commonly found in most supplements.
But what really sets it apart is the truly comprehensive 60 day, 100% satisfaction guarantee - allowing you to try the product risk-free for 60 days to ensure you see the benefits.
Why You'll Love Calcium Complex:
Superior quality calcium citrate for ultimate absorption & enhanced effectiveness.
Made in the UK to GMP standards & rigorously tested for purity & ingredient quality.
Tasteless, vegan-friendly capsules (no messy powders or drinks!) in a convenient travel-friendly bottle.
Our #1 Pick
Purolabs
Calcium Complex
From £18.33 per bottle
With an ultra clean formula that's 100% free of any fillers or unnecessary ingredients, this product has hundreds of verified 5-star reviews. Feedback from customers is also extremely impressive - with many people reporting excellent results.
Ratings Breakdown
Quality
The commitment to quality is second-to-none. They focus on the highest-quality, most clinically-tested ingredients without the usual additives or fillers commonly found in most supplements.
Quality
The commitment to quality is second-to-none. They focus on the highest-quality, most clinically-tested ingredients without the usual additives & fillers found in most supplements.
Value
You can definitely find calcium supplements cheaper - but if you want true value for money, we think it's worth the investment in your health.
Value
You can definitely find calcium supplements cheaper - but if you want true value for money, we think it's worth the investment in your health.
Customer Experience
The website is easy to navigate; the delivery is fast and free; and the items come well-packaged. Customer feedback is excellent.
Customer Experience
The website is easy to navigate; the delivery is fast and free; and the items come well-packaged. Customer feedback is excellent.
Brand
While a relative newcomer, the brand has been on the scene for a couple of years now, slowly building their reputation for quality products with premium ingredients.
Brand
While a relative newcomer, the brand has been on the scene for a couple of years now, slowly building their reputation for quality products with premium ingredients
Perks
The product comes with a truly risk-free 60 day 100% satisfaction guarantee so you can try the product first to ensure it's suitable for you.
Perks
The product comes with a truly risk-free 60 day 100% satisfaction guarantee so you can try the product first to ensure it's suitable for you.
Shop Our #1 Pick
Puro Calcium Complex by Purolabs
Other Options Worth Considering:
Bone Health Capsules from Bulk™ provide a synergistic combination of 13 active ingredients including vitamins, minerals and plant extracts.
The capsules are suitable for vegetarians & vegans and the formula is of a very good quality indeed. 3 capsules a day is the recommended intake and each bottle costs around £29.99 for a 30 day supply.
Solgar® Ultimate Bone Support is expertly formulated to provide 7 key nutrients including calcium, magnesium, vitamin D3, K2, zinc, and manganese.
Their formulation contains a unique blend of amino acid chelates, citrates & malates which ensure that all minerals are easy to absorb and utilised.
Adults are recommended to take 4 tablets daily of this vegan-friendly product. A bottle of 120 tablets costs £37.99 for a 30 day supply.
Osteocare Liquid provides calcium and important co-factors like magnesium, vitamin D and zinc, all in a single daily orange drink.
This supplement is ideal for children and teens or anyone who has difficulty swallowing capsules or tablets. Adults are recommended to take 2 spoonfuls twice daily.
While it's suitable for vegetarians, unfortunately, the formula isn't quite as clean as capsule-based options however.
Vitafusion Calcium gummy bears are a delicious calcium supplement that provide a quality source of both calcium & vitamin D.
With 3 natural flavours of orange, strawberry, and cherry, this product is formulated for adults (2 gummies daily).
While it's definitely the tastiest way to get a calcium boost, it does contain gelatin, sugar & sweeteners, so if you're looking for the cleanest possible formulation then this might not be ideal.
Shop Our #1 Pick
Puro Calcium Complex by Purolabs
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