Jarrow Formulas Melatonin Sustain
Brand: Jarrow Formulas · Form: TABLET [E0155]
Our assessment
The evidence shows that this product, Jarrow Formulas Melatonin Sustain, contains calcium as one of its ingredients. The data on calcium is clear: it is essential for bone health and nerve function, but you need to be careful with dosing. Our assessment is that calcium is a well-studied mineral, but it is not without risks when taken in excess [NIH ODS].
How it works
Think of calcium as a structural builder for your bones and a signal regulator for your nerves. It supports bone mineralization to maintain density and helps your muscles relax after contraction through neuromuscular relaxation [NIH ODS].
Safety profile
FDA received a total of 592,059 adverse event reports across all supplements. For calcium specifically, safety concerns arise with high intakes. Some research suggests a potential link to increased risk of heart disease and prostate cancer [NIH ODS]. High blood and urine levels of calcium can lead to poor muscle tone, poor kidney function, low phosphate levels, constipation, nausea, weight loss, extreme tiredness, frequent urination, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Calcium can also reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Data not available for a specific daily dose of calcium from this product. If you are taking this melatonin supplement, check the label for the exact calcium content. Be mindful of your total calcium intake from all sources, including food and other supplements, to avoid exceeding safe levels. If you take any of the medications listed, separate your calcium dose by at least two hours [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Jarrow Formulas |
|---|---|
| Serving Size | |
| Contents | 60.0 Tablet(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