Solgar Calcium Magnesium Citrate

Our assessment

The evidence shows that Solgar Calcium Magnesium Citrate is a well-formulated combination supplement. Our assessment is that it provides a meaningful source of calcium in a citrate form, which is often better absorbed than other forms, especially when taken without food. The data supports its role in supporting bone health, but you need to be aware of the specific dosage and potential risks associated with calcium intake [NIH ODS].

How it works

Think of calcium as the primary building block for your bones. It directly supports bone mineralization, helping to maintain bone density and strength. Additionally, calcium plays a vital role in neuromuscular relaxation, meaning it helps your muscles relax and your nerves signal properly after they contract [NIH ODS]. The magnesium in the formula works alongside calcium to support these muscle and nerve functions.

Safety profile

The safety profile for calcium requires careful attention. The FDA has received a total of 592,059 adverse event reports for all products, though this number is not specific to this one supplement. The data warns that high calcium intakes might increase the risk of heart disease and prostate cancer. High levels of calcium in your blood and urine can cause poor muscle tone, poor kidney function, low phosphate levels, constipation, nausea, weight loss, extreme tiredness, frequent need to urinate, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. You should also be aware that calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].

Our recommendation

Our recommendation is to use this supplement only if you have a confirmed need for additional calcium and magnesium, such as a dietary shortfall. Take it with food to enhance absorption and minimize stomach upset. Always separate your dose from any prescription medications by at least 2 hours, especially those listed above. Do not exceed the recommended dose on the label, as more is not better and can be harmful. If you have a history of kidney stones, heart disease, or prostate cancer, consult your doctor before taking this product [NIH ODS].

Supplement labels contain several key sections regulated by the FDA:

• Serving Size — The recommended amount per dose. Always check this — some products require multiple capsules per serving.
• Amount Per Serving — Shows the quantity of each nutrient in the product, typically in IU (International Units), mg (milligrams), or mcg (micrograms).
• % Daily Value (%DV) — Indicates how much a nutrient in a serving contributes to a daily diet. 5% DV or less is low; 20% DV or more is high.
• Other Ingredients — Lists inactive ingredients like fillers, binders, and capsule materials (e.g., gelatin, cellulose, magnesium stearate).
• Suggested Use — The manufacturer's recommended directions for taking the supplement, including timing and dosage.

Source: FDA Dietary Supplement Labeling Guide