Nature's Blend Vitamin D3 400 IU Drops Lemon Flavor
Brand: Nature's Blend · Form: LIQUID, SUPPLEMENT FORM [E0165] On Market
Our assessment
The evidence shows that Nature's Blend Vitamin D3 400 IU Drops provide a standard, low-dose supplement. For most adults, this 400 IU dose is below the general RDA of 600 IU per day, so you may need additional vitamin D from other sources or a higher-dose supplement to meet your needs [NIH ODS].
How it works
Think of vitamin D as a master regulator for calcium. The primary ingredient, calcium, supports bone mineralization, helping to keep your skeleton strong, and also plays a role in neuromuscular relaxation for proper nerve signaling [NIH ODS]. The 400 IU of vitamin D3 in these drops helps your body absorb calcium effectively.
Safety profile
FDA received a total of 592,059 adverse event reports across all supplements, but specific report counts for this product are not available. Regarding the calcium content, high levels of calcium in the blood can cause constipation, nausea, weight loss, extreme tiredness, and abnormal heart rhythms [NIH ODS]. Be aware that calcium can reduce the absorption of certain medications, including bisphosphonates, tetracycline antibiotics, and levothyroxine [NIH ODS].
Our recommendation
Start by assessing your total daily calcium and vitamin D intake from all sources. If you are using this as your only vitamin D supplement, note that 400 IU is a maintenance dose for some, but many adults require 600–800 IU daily. Always consult your doctor before starting supplements, especially if you take prescription medications like thyroid or antibiotic drugs [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Nature's Blend |
|---|---|
| Serving Size | |
| Contents | 1.75 oz. 52.2 mL |
| 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