Jarrow Formulas Melatonin Sustain
Brand: Jarrow Formulas · Form: TABLET [E0155]
Our assessment
The evidence shows that the ingredient calcium in Jarrow Formulas Melatonin Sustain is essential for bone health, but you need to be careful with dosing. Calcium supports bone density and helps with muscle relaxation and nerve signaling [NIH ODS]. However, our assessment is that you should not rely on this product as your primary source of calcium, as the data does not specify the amount present.
How it works
Think of calcium as a structural builder for your skeleton. It works by depositing into your bones to maintain density, and it also helps your muscles relax after contracting [NIH ODS]. This dual role is critical for everyday movement and long-term skeletal strength.
Safety profile
FDA received a total of 592,059 adverse event reports across all supplement categories. For calcium specifically, side effects can include constipation, nausea, and extreme tiredness [FDA data] [NIH ODS]. High levels of calcium in the blood and urine may also cause poor muscle tone, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Additionally, calcium can reduce the absorption of medications like bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
We recommend you do not use this product as a primary calcium supplement because the exact dosage is not available in the data. If you need calcium, obtain it from food sources or a dedicated supplement with a known dose. Always take calcium supplements separately from thyroid medication or antibiotics 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