NOW Chewable Vitamin D3 1,000 IU
Brand: NOW · Form: TABLET [E0155]
Our assessment
The evidence shows that NOW Chewable Vitamin D3 1,000 IU is a straightforward supplement aimed at supporting your daily vitamin D intake. Our assessment: Vitamin D is essential for bone health, immune function, and calcium absorption, and the 1,000 IU dose in this chewable form is a common and convenient option for adults. However, we must be clear that the data provided does not include specific studies or health claims for this exact product, so our analysis relies on general knowledge of the ingredient [NIH ODS].
How it works
Think of vitamin D3 as a master regulator — it helps your body absorb calcium, which is critical for bone mineralization and neuromuscular relaxation [NIH ODS]. By taking 1,000 IU of vitamin D3 daily, you are supporting your body’s ability to maintain strong bones and proper nerve signaling. The chewable form makes it easy to take, especially for those who have trouble swallowing pills.
Safety profile
Data not available for this specific product’s side effects. However, the FDA has received a total of 592,059 adverse event reports across all supplements. For the ingredient calcium, high levels can cause poor muscle tone, poor kidney function, constipation, nausea, weight loss, and abnormal heart rhythms [NIH ODS]. High calcium intakes might also increase the risk of heart disease and prostate cancer [NIH ODS]. Always follow the recommended dosage and consult your healthcare provider before starting any new supplement.
Our recommendation
Our recommendation: Start with one chewable tablet daily, providing 1,000 IU of vitamin D3. This is a reasonable dose for most adults, but you should have your blood levels checked to ensure you are not exceeding safe limits. Choose this product if you prefer a chewable form and want a straightforward vitamin D supplement. Do not take additional calcium supplements without medical guidance, as interactions with medications like bisphosphonates and levothyroxine are possible [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | NOW |
|---|---|
| Serving Size | |
| Contents | 180.0 Chewable(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