New Chapter Probiotic All-Flora

Our assessment

The evidence shows that this product contains calcium, a mineral essential for bone health. However, there are important safety considerations you need to know. Our assessment is that while calcium supports bone density and muscle function, the data raises concerns about potential risks from high intakes, including heart disease and prostate cancer [NIH ODS]. This product should be used with caution and under professional guidance.

How it works

Calcium acts as a master regulator for your skeleton and nervous system. It supports bone mineralization, helping to deposit minerals into your bone matrix for strength, and it aids neuromuscular relaxation by supporting nerve signaling and muscle function [NIH ODS]. Think of it as the building block your body uses to keep your bones dense and your muscles working smoothly.

Safety profile

FDA has received 592,059 total adverse event reports for products in this category. The safety data for calcium indicates that high levels 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] [FDA data]. Additionally, calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Data not available on specific side effect report counts for this individual product.

Our recommendation

We recommend you do not take this supplement without first consulting your doctor, especially if you take any medications or have a history of heart or kidney issues. The potential for serious side effects and medication interactions is significant [NIH ODS]. If your healthcare provider approves, start with the lowest effective dose and monitor your calcium intake from all sources, including food. Choose a product with a clear label and third-party testing, as specific brand data is not available here.

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