Douglas Laboratories Multi-Probiotic Sinus Support
Brand: Douglas Laboratories · Form: CAPSULE [E0159] On Market
Our assessment
The evidence shows that Douglas Laboratories Multi-Probiotic Sinus Support is a targeted supplement designed to support sinus health through probiotics. Our assessment is based on the data provided, which focuses on the ingredient calcium, not the probiotic blend itself. For calcium, the data confirms it plays a role in bone mineralization and neuromuscular relaxation [NIH ODS]. However, for the specific probiotic ingredients in this product, data on their direct benefits for sinus health is not available.
How it works
Think of calcium as a master regulator for your bones and muscles — it supports bone density and mineral deposition, and helps with muscle relaxation and nerve signaling [NIH ODS]. For the probiotic component, the data provided does not include specific mechanisms for sinus support. You should be aware that the primary active ingredient with documented data is calcium, which may not directly address sinus issues.
Safety profile
FDA received a total of 592,059 adverse event reports across all supplements, though specific reports for this product are not available. For calcium, side effects from high intakes include 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]. High calcium levels can also cause poor muscle tone, poor kidney function, and low phosphate levels [NIH ODS]. Additionally, calcium can reduce the absorption of medications like bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
We recommend caution with this product. The data does not support its use specifically for sinus health, and the primary documented ingredient (calcium) carries significant risks at high doses. You should not exceed the RDA for calcium without medical supervision. Consult your healthcare provider before starting this supplement, especially if you take any medications listed above. For sinus support, data on effective alternatives is not available.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Douglas Laboratories |
|---|---|
| Serving Size | |
| Contents | 90.0 Vegetarian Capsule(s) |
| Market Status | On 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