NOW Magnesium & Potassium Aspartate
Brand: NOW · Form: CAPSULE [E0159]
Our assessment
The evidence shows that NOW Magnesium & Potassium Aspartate is a supplement that provides two essential minerals, but the data on this specific product is limited. Our assessment is based on the ingredients listed, as no specific studies or adverse events for this exact formulation were provided. For the ingredient calcium, which is structurally related to the minerals in this product, the data indicates it supports bone mineralization and neuromuscular relaxation [NIH ODS]. However, we must be clear: the specific benefits of magnesium and potassium aspartate for your health are not detailed in the provided data, so we recommend caution.
How it works
Think of the minerals in this supplement as key players in your body's electrical and structural systems. The data provided explains that calcium, a similar mineral, supports bone density through bone mineralization and helps your nerves and muscles relax through neuromuscular relaxation [NIH ODS]. While this mechanism is not directly stated for magnesium and potassium, these minerals are also critical for nerve signaling and muscle function. You should know that the specific mechanism of the "aspartate" form is not covered in the supplied information.
Safety profile
Based on the FDA data, there are 592,059 total adverse event reports for all dietary supplements, but no specific reports are provided for this product [FDA data]. For the related mineral calcium, the data warns that high intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. High calcium levels 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 for magnesium or potassium aspartate specifically is not available.
Our recommendation
Our recommendation is to proceed with caution. Since no specific studies, dosages, or side effect reports for this product are provided, you should consult your healthcare provider before taking it. Be aware that calcium can reduce the absorption of medications like bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Without data on the magnesium and potassium content or their specific effects in this form, we cannot give a confident dosage or benefit claim. Seek professional guidance to determine if this supplement is appropriate for your needs.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | NOW |
|---|---|
| Serving Size | |
| Contents | 120.0 Veg Capsule(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