PureFormulas D-Ribose Powder Malic Acid + Magnesium

Our assessment

Our assessment: The evidence shows that this product contains a combination of D-ribose, malic acid, and magnesium. However, the data provided does not include any specific studies or health claims for D-ribose or malic acid as standalone ingredients. For the magnesium component, we can reference general mineral data. You should be aware that the primary ingredient data available is for calcium, not magnesium, so we cannot make specific claims about the benefits of this particular formula based on the information given.

How it works

Think of the calcium data as a reference point for how minerals function. Calcium supports bone mineralization and neuromuscular relaxation [NIH ODS]. While this product contains magnesium, not calcium, the mechanism for minerals is similar: they play a role in nerve signaling and muscle function. The D-ribose and malic acid in this formula are often used for energy support, but no specific data on their mechanism is provided in the data set.

Safety profile

Data not available for this specific product’s side effects. The FDA has received 592059 total adverse event reports for all dietary supplements, but no specific report count is provided for D-ribose, malic acid, or magnesium in this product [FDA data]. For general mineral safety, high levels of calcium in the blood and urine can cause poor muscle tone, poor kidney function, constipation, nausea, weight loss, extreme tiredness, and abnormal heart rhythms [NIH ODS]. However, this product contains magnesium, not calcium, so those side effects may not apply directly.

Our recommendation

We recommend that you consult with your healthcare provider before starting this supplement, as the data provided does not include specific studies or safety information for D-ribose or malic acid. Without clinical trial data from the provided list (no journal or year cited), we cannot confirm the efficacy of this combination. Choose a supplement with ingredients that have clear, evidence-based support from sources like NIH ODS or FDA data.

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