Rx Select Nutraceuticals Turmeric with Ginger 500 mg

Our assessment

The evidence shows that this product contains two ingredients with distinct profiles. The data confirms that calcium is present in the formulation, though the exact amount per serving is not provided. Our assessment: you should know that calcium is a mineral best obtained from food first, and supplements are for filling gaps, not replacing diet [NIH ODS].

How it works

Think of calcium as a key structural component — it supports bone mineralization and bone density, and it plays a critical role in neuromuscular relaxation and nerve signaling [NIH ODS].

Safety profile

FDA received a total of 592,059 adverse event reports across all supplements. For calcium specifically, research shows that high intakes might increase the risk of heart disease and prostate cancer. High levels of calcium in the 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]. Additionally, calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Data not available for side effect report counts specific to calcium alone.

Our recommendation

Start by assessing your dietary calcium intake from food sources like dairy, leafy greens, and fortified products. If you take this supplement, do not exceed 2,000 mg of total calcium per day from all sources [NIH ODS]. Take it separately from your thyroid medication or antibiotics by at least two hours to avoid absorption issues [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