NOW Sports Amino Complete

Our assessment

Our assessment is that NOW Sports Amino Complete is a combination product, but based on the data provided, its primary active mineral ingredient is calcium. The evidence shows that calcium is essential for your body, but the supplement's value depends entirely on whether you already get enough from your diet. We need to be cautious here: this product's specific formulation data is limited, so we focus on the calcium component, which is the only ingredient with detailed data available.

How it works

Think of calcium as a structural building block and a cellular messenger. It supports bone density and mineral deposition, which is critical for strong bones. It also plays a key role in neuromuscular relaxation, helping your muscles relax and your nerves signal properly after activity [NIH ODS].

Safety profile

The FDA has received 592,059 total adverse event reports for all supplements, but specific side effect data for this exact product is not available. For the calcium component, the data shows that high intakes might increase the risk of heart disease and prostate cancer. 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]. You should also be aware that calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].

Our recommendation

Our recommendation is to check your total daily calcium intake from food and other supplements before adding this product. Do not exceed the recommended daily allowance without medical supervision. If you take any of the medications listed, separate your calcium supplement by at least two hours. Because specific data on the full amino acid blend is not available, we cannot confirm its effectiveness for muscle recovery or performance. Choose this product only if you have a confirmed need for additional calcium and are aware of the potential risks [NIH ODS].

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