Quest Melatonin 3 mg
Brand: Quest · Form: CAPSULE [E0159] On Market
Our assessment
The evidence shows that Quest Melatonin 3 mg contains calcium as an ingredient. Calcium is a critical mineral for bone health, but its role in a melatonin supplement is unclear. Data not available on the specific purpose of calcium in this product.
How it works
Calcium supports bone mineralization and helps maintain bone density, while also playing a role in neuromuscular relaxation and nerve signaling [NIH ODS].
Safety profile
FDA received 592059 total adverse event reports across all supplement categories. For calcium specifically, high intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. 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]. Calcium can reduce the absorption of bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Data not available on the appropriate dose of calcium in this product. If you are taking Quest Melatonin 3 mg for sleep, be aware that the calcium content may interact with other medications you take. Consult your healthcare provider before using, especially if you take antibiotics or thyroid medication [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Quest |
|---|---|
| Serving Size | |
| Contents | 90.0 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