ProCaps Laboratories Vitamin D3 4000
Brand: ProCaps Laboratories · Form: CAPSULE [E0159] On Market
Our assessment
The evidence shows that this product provides a high dose of vitamin D3, but based on the data provided, the primary ingredient for which we have complete safety and interaction information is calcium. For vitamin D3 specifically, data on exact side effects and detailed mechanisms from the provided sources are not available. Our assessment is that you should exercise caution with a 4000 IU dose of vitamin D3 without consulting your healthcare provider, as this exceeds the standard 600 IU RDA for most adults [NIH ODS].
How it works
Based on the data for calcium, think of this mineral as a structural support for your body. It is critical for bone mineralization, helping to deposit minerals into bone to maintain density and strength. Additionally, calcium supports neuromuscular relaxation, which helps your muscles relax and nerves signal properly after contraction [NIH ODS].
Safety profile
The FDA received a total of 592,059 adverse event reports across all supplements. For calcium specifically, high intakes might increase the risk of heart disease and prostate cancer. High levels of calcium 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] [FDA data].
Our recommendation
Start by checking your current vitamin D and calcium levels with a blood test. Because vitamin D3 at 4000 IU is a high dose, we recommend consulting your doctor before starting this product, especially if you take medications like bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, or phenytoin, as calcium can reduce their absorption [NIH ODS]. Data for vitamin D3-specific interactions and side effects from the provided sources are not available.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | ProCaps Laboratories |
|---|---|
| Serving Size | |
| Contents | 360.0 Easy-To-Swallow 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