Scitec Calcium Magnesium

🦴 Calcium 500mg (63% NRV) — bones, teeth, muscle contraction and blood clotting

Calcium is the most abundant mineral in the human body — approximately 99% stored in bone and dental tissue where it provides structural integrity, and 1% circulating in blood and soft tissue where it mediates fundamental physiological processes. EU-authorised health claims for calcium include: contributing to normal maintenance of bones and teeth, normal muscle function (including cardiac muscle contraction), normal neurotransmission, normal blood clotting and normal energy-yielding metabolism. For physically active individuals, calcium is particularly relevant as both a structural bone mineral — bone density is actively maintained and improved through resistance training, which requires adequate calcium availability — and as the intracellular signal for muscle contraction.

🔋 Magnesium 250mg (67% NRV) — energy metabolism, protein synthesis and fatigue reduction

Magnesium is a cofactor for over 300 enzymatic reactions in human metabolism — the most enzymatically broad mineral in human physiology. EU-authorised health claims include: contributing to normal energy-yielding metabolism, normal protein synthesis, normal muscle function, reduction of tiredness and fatigue, normal psychological function and normal functioning of the nervous system. For athletes, magnesium is of particular importance because it is lost in significant quantities through sweat during exercise — creating a recurring daily magnesium deficit in active individuals that dietary intake frequently fails to fully compensate. Magnesium deficiency is associated with muscle cramping, reduced force production, impaired recovery and increased fatigue perception.

🔗 The 2:1 ratio — the physiologically established calcium-magnesium balance

The 2:1 calcium-to-magnesium ratio (500mg : 250mg) is the most widely used and recommended ratio in clinical and sports nutrition calcium-magnesium supplementation. Calcium and magnesium are interdependent: magnesium is required for the normal absorption and metabolism of calcium, and excessive calcium supplementation without adequate magnesium can impair magnesium absorption. The 2:1 ratio reflects the approximate natural balance of these minerals in dairy foods (the primary dietary calcium and magnesium source) and is the ratio validated in the majority of research on combined calcium-magnesium supplementation.

💊 Dual-source mineral formula — carbonate + gluconate for both potency and absorption

The dual-source approach addresses the limitations of single-source mineral supplements. Calcium carbonate and magnesium oxide are the most concentrated forms by elemental mineral weight — providing maximum mineral content per gram of ingredient. Calcium gluconate and magnesium gluconate are organic salt forms with superior water solubility and better gastrointestinal tolerability. By combining both source types, Scitec Calcium-Magnesium provides a formula that is both highly concentrated per tablet and well-tolerated — avoiding the digestive discomfort that can occur with large doses of calcium carbonate or magnesium oxide alone.

🌿 HPMC coating — plant-based — suitable for vegetarians

The tablet coating uses hydroxypropyl methyl cellulose (HPMC) — a plant-derived cellulose polymer. No gelatin, no shellac, no animal-derived coating agents. This makes Scitec Calcium-Magnesium suitable for vegetarians — a meaningful differentiator from many mineral supplements that use gelatin capsules or shellac-glazed tablets.

🎯 Goal guide

🏋️ Strength training and mass gain: 1 tablet/day. Calcium for bone density maintenance under progressive overload; magnesium for protein synthesis and muscle function recovery.

🔥 Endurance training: 1 tablet/day. Magnesium replaces sweat losses; calcium supports normal cardiac muscle function during prolonged cardiovascular effort.

⚖️ Daily wellness: 1 tablet/day. The most fundamental daily mineral supplement for any active individual — covering the two most commonly exercise-depleted minerals in a single tablet.

Serving suggestion

Take 1 tablet per day, preferably with a meal. The HPMC coating facilitates swallowing. Do not exceed the recommended daily dose.

Best times to take it

🍽️ With the main meal (primary recommendation)

Scitec recommends taking with a meal. Calcium absorption is significantly enhanced in an acidic environment — the stomach acid produced during digestion of a meal creates optimal conditions for calcium carbonate dissolution and absorption. Magnesium is better tolerated on a full stomach, reducing the mild laxative effect that magnesium can produce when taken in a fasted state.

☀️ Morning with breakfast

For daily supplement routine consistency, morning with breakfast is the most common and easiest-to-maintain timing. Calcium and magnesium status is maintained through consistent daily intake rather than precise timing — the priority is never missing a dose.

🌙 Evening with dinner

The evening timing is particularly relevant for the magnesium fraction — magnesium’s role in supporting normal nervous system function and the reduction of tiredness and fatigue makes it a useful evening supplement contribution. Several athletes and practitioners prefer evening calcium-magnesium supplementation for this reason.

⚠️ Separate from iron supplements: calcium and iron share intestinal absorption pathways — taking calcium-magnesium supplements simultaneously with iron-containing products (multivitamins, iron supplements) reduces the absorption of both minerals. Space them at least 2 hours apart for optimal absorption of each.

Supply duration guide

Full ingredient list

Calcium carbonate, magnesium oxide, calcium gluconate 14%, magnesium gluconate 9.3%, coating [glazing agents (hydroxypropyl methyl cellulose, polyethylene glycol, hydroxypropyl cellulose), acidity regulator (calcium sulphate), bulking agent (magnesium carbonates), anti-caking agent (cellulose)], anti-caking agent (magnesium salts of fatty acids), bulking agent (cross-linked cellulose gum).

Key ingredient breakdown

Allergens

No allergens declared in the formula. Plant-based HPMC coating — suitable for vegetarians. Produced in a facility processing milk, egg, gluten, soy, peanuts, nuts, celery, fish, crustaceans, molluscs and sulphur dioxide — cross-contamination risk. Always refer to the current product label for the most up-to-date allergen information.

Product characteristics:

• Calcium 500mg (63% NRV) per tablet
• Magnesium 250mg (67% NRV) per tablet
• 2:1 calcium-to-magnesium ratio
• Dual-source formula: carbonate + gluconate for each mineral
• Plant-based HPMC coating — no gelatin — suitable for vegetarians
• No allergens declared
• 7 EU-authorised health claims

Active mineral content per tablet (daily dose)

EU-authorised health claims

Nutritional values per tablet

Formats disponibles

Q1 — Why are calcium and magnesium supplemented together in a 2:1 ratio rather than separately?

Calcium and magnesium are physiologically interdependent minerals — they share several absorption pathways and their metabolism is mutually regulated. Magnesium is required for the parathyroid hormone-mediated regulation of calcium metabolism; without adequate magnesium, calcium supplementation becomes less effective because the hormonal regulation of calcium absorption and bone deposition is impaired. Conversely, very high calcium intake without adequate magnesium can reduce magnesium absorption through competitive inhibition at intestinal transporters. The 2:1 ratio (2 parts calcium to 1 part magnesium) mirrors the approximate natural balance of these minerals in dairy foods and is the ratio most commonly used in clinical nutrition research on combined calcium-magnesium supplementation. Supplementing them together in the correct ratio is more physiologically appropriate than taking high doses of either mineral in isolation.

Q2 — Why does the formula use both carbonate and gluconate forms of each mineral?

The dual-source approach addresses a fundamental trade-off in mineral supplement formulation. Inorganic mineral salts (carbonate, oxide) are the most concentrated forms — calcium carbonate provides 40% elemental calcium by weight, meaning less filler is needed per dose. However, they require an acidic environment for optimal dissolution (calcium carbonate dissolves well in stomach acid) and can cause digestive discomfort at high doses. Organic mineral salts (gluconate, citrate, malate) are more soluble at neutral pH, better absorbed in individuals with low stomach acid and better tolerated — but provide less elemental mineral per gram of ingredient. By combining both forms, Scitec achieves a tablet that is both highly concentrated per serving and well-tolerated, avoiding the limitations of single-source formulas.

Q3 — Why is calcium-magnesium particularly important for athletes?

Both minerals are lost through sweat during exercise — with losses proportional to exercise duration and intensity. A single hour of moderate-intensity training can produce calcium losses of 20 to 40mg and magnesium losses of 40 to 100mg through sweat, particularly in warm or humid conditions. Athletes training 5 or more days per week face recurring daily mineral losses that are often not compensated through diet alone — particularly on caloric restriction phases where dairy and green vegetable intake may be reduced. Beyond sweat losses, magnesium is particularly relevant because it is a cofactor for over 300 enzymatic reactions including ATP production, protein synthesis and DNA replication — all fundamental to the adaptation response to training.

Q4 — Should I take Scitec Calcium-Magnesium at a different time from iron-containing supplements?

Yes — calcium and iron compete for the same intestinal absorption transporter (divalent metal transporter 1, DMT1). When taken simultaneously, calcium significantly reduces iron absorption and vice versa. If you are taking an iron-containing multivitamin (such as Optimum Nutrition Opti-Women — which contains 14mg of iron) or any iron supplement, space your calcium-magnesium tablet at least 2 hours apart from the iron-containing product for optimal absorption of both minerals.

Q5 — With 392 reviews at 4.8/5, what makes this product stand out in the calcium-magnesium category?

The 4.8/5 from 392 reviews is exceptional for a mineral supplement — a category where products are often perceived as interchangeable commodities. The key differentiators are the dual-source formulation (better tolerated and absorbed than single-source carbonate or oxide only products), the correct 2:1 ratio (validated by both clinical research and the body’s natural mineral balance requirements), the HPMC plant-based coating (no gelatin — broader dietary compatibility), and the comprehensive EU-authorised health claim coverage that makes the formula credible and transparent. The 90-day supply from a single pack also reduces the re-ordering frequency, contributing to better supplementation adherence and higher customer satisfaction.