Douglas Laboratories Vitamin A
Brand: Douglas Laboratories · Form: SOFTGEL CAPSULE [E0161] On Market
Our assessment
The evidence shows that the primary ingredient in Douglas Laboratories Vitamin A, calcium, is well-documented for its role in bone health, but data specific to this product's formula is not available. Our assessment is that while calcium is essential, you should be cautious about total intake from all sources, as high levels carry risks [NIH ODS].
How it works
Calcium acts as a master regulator for your body. It supports bone mineralization and density, and it is critical for neuromuscular relaxation and nerve signaling. Think of it as the key mineral that helps your muscles unwind and your nerves communicate properly [NIH ODS].
Safety profile
FDA received a total of 592,059 adverse event reports across all supplement categories, but specific report counts for this product are not available. The data shows that high calcium intakes might increase the risk of heart disease and prostate cancer. 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 urination, 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].
Our recommendation
Start by assessing your total daily calcium intake from food and other supplements. If you are taking any medications listed above, take this supplement at a different time of day. Monitor for side effects like constipation or nausea. Without specific product data, it is safest to consult your healthcare provider before starting [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Douglas Laboratories |
|---|---|
| Serving Size | |
| Contents | 100.0 Softgel(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