Product Label

Dr. Sinatra Magnesium Broad-Spectrum Complex

Brand: Dr. Sinatra · Form: CAPSULE [E0159]

Our assessment

The evidence shows that Dr. Sinatra Magnesium Broad-Spectrum Complex is a supplement containing calcium, a mineral with well-documented roles in bone health and nerve function. Our assessment: this product may support bone density and muscle relaxation, but you need to be aware of the safety data, which includes a very high number of FDA adverse event reports. Data not available on the specific magnesium blend in this product.

How it works

Think of calcium as a structural and signaling mineral. It works through two primary mechanisms: Bone mineralization supports bone density and mineral deposition, and neuromuscular relaxation supports muscle relaxation and nerve signaling [NIH ODS].

Safety profile

FDA received a total of 592,059 adverse event reports for this product category. Specific side effects from the calcium data include constipation, nausea, weight loss, extreme tiredness, frequent need to urinate, abnormal heart rhythms, and a high risk of death from heart disease. High calcium intakes might also increase the risk of heart disease and prostate cancer [FDA data] [NIH ODS].

Our recommendation

Start by checking if you actually need a calcium supplement. Calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. We recommend consulting your doctor before starting this supplement, especially given the high number of adverse event reports and the potential for serious side effects at high levels [FDA data] [NIH ODS].

AI-assisted analysis. Data sourced from NIH DSLD.

Supplement Facts

BrandDr. Sinatra
Serving Size
Contents120.0 Capsule(s)
Market StatusOff Market

How to Read This Label

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

Original Label

View Full DSLD Label (PDF)

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