Terry Naturally Colon & Bowel Probiotic

Our assessment

The evidence shows that calcium, a key mineral in this product, supports bone health and nerve function [NIH ODS]. However, based on the data provided, we cannot make a specific assessment of this probiotic formula itself because ingredient-specific information for the probiotic strains is not available. For calcium, our assessment is that it is effective for bone mineralization, but you should be aware of significant safety considerations at high intakes [NIH ODS].

How it works

Think of calcium as a building block for your bones and a signal messenger for your nerves and muscles. It supports bone density and mineral deposition, and it helps your muscles relax and nerves signal properly [NIH ODS]. Data not available on how the probiotic strains in this specific product function.

Safety profile

FDA received a total of 592,059 adverse event reports for all dietary supplements, though specific numbers for this product are not available. For calcium specifically, high intakes can cause serious side effects including nausea, constipation, weight loss, extreme tiredness, frequent urination, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. High calcium levels can also cause poor muscle tone, poor kidney function, and low phosphate levels [NIH ODS]. Calcium supplements may reduce the absorption of medications such as bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].

Our recommendation

Data not available to provide a specific recommendation on this probiotic. For the calcium component, you should be cautious about total intake from all sources. Do not exceed recommended levels without medical supervision, and be aware of potential interactions with medications [NIH ODS]. We recommend consulting your healthcare provider before starting this supplement, especially if you take prescription medications or have a history of kidney or heart conditions.

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