Source Naturals NightRest With Melatonin
Brand: Source Naturals · Form: TABLET [E0155] On Market
Our assessment
The evidence shows that the primary active ingredient in Source Naturals NightRest With Melatonin is melatonin, but the data provided focuses on calcium, which is listed on the label. Based on the available data, calcium supports bone mineralization and neuromuscular relaxation [NIH ODS]. However, for a sleep-specific product like NightRest, the data on melatonin is not available in the provided information. We cannot assess the efficacy of this specific product for sleep without direct data on its key ingredient.
How it works
Think of calcium as a foundational mineral for your body. It works by supporting bone density and mineral deposition, which keeps your skeleton strong [NIH ODS]. Additionally, calcium plays a role in neuromuscular relaxation, helping your muscles relax and your nerves signal properly [NIH ODS]. These functions are important for overall health, but do not directly address the sleep-promoting mechanism you might expect from a product called NightRest.
Safety profile
The FDA has received a total of 592,059 adverse event reports across all supplements, but specific report counts for this product are not available [FDA data]. For calcium, some research suggests that 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]. Data on side effects specific to this product is not available.
Our recommendation
Data not available for the primary sleep ingredient (melatonin) in this product. We cannot recommend Source Naturals NightRest With Melatonin for sleep based solely on the calcium data provided. If you are considering this product for sleep support, consult your healthcare provider, as the data required to assess its effectiveness for that purpose is missing. For general bone health from calcium, follow the RDA of 1,000 mg for most adults, but be aware of the potential risks and interactions with medications like bisphosphonates and tetracycline antibiotics [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Source Naturals |
|---|---|
| Serving Size | |
| Contents | 100.0 Tablet(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