Douglas Laboratories Melatonin
Brand: Douglas Laboratories · Form: CAPSULE [E0159]
Our assessment
Our assessment: The evidence on calcium from Douglas Laboratories shows it is a critical mineral for bone health, but the safety data requires careful attention. For most adults, the goal is to meet your daily needs through diet first, and only supplement if a deficiency is confirmed. The data confirms that calcium supports bone density and neuromuscular function [NIH ODS]. However, the risks associated with excessive intake are significant and should not be overlooked.
How it works
Think of calcium as a structural building block for your skeleton. It works through bone mineralization, helping to deposit minerals into your bone matrix to maintain density and strength [NIH ODS]. Additionally, calcium plays a role in neuromuscular relaxation, which supports proper muscle function and nerve signaling throughout your body [NIH ODS].
Safety profile
The FDA has received a total of 592,059 adverse event reports for this product, though this number covers all reports, not just those linked to calcium. You should be aware that high calcium intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. Very high levels 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]. Calcium can also reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Our recommendation: Do not exceed the recommended dietary allowance without medical supervision. If you take calcium, separate it from medications like thyroid hormone or antibiotics by at least two hours. Start by assessing your dietary intake from dairy, leafy greens, and fortified foods before adding a supplement. Always consult your healthcare provider for personalized advice, especially if you have a history of kidney stones or heart conditions [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Douglas Laboratories |
|---|---|
| Serving Size | |
| Contents | 60.0 Capsule(s) |
| Market Status | Off 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