Rockstar Rockstar Energy Drink PerfectBerry

Our assessment

The evidence shows that Rockstar Energy Drink PerfectBerry contains the ingredient Calcium. While calcium is essential for health, the data on this specific product is limited. Our assessment is that you should be aware of how the calcium in this drink fits into your total daily intake, as high levels can pose health risks [NIH ODS].

How it works

Calcium supports your body in two key ways: it aids in bone mineralization, helping to build and maintain strong bone density, and it supports neuromuscular relaxation, which is important for proper muscle and nerve signaling [NIH ODS].

Safety profile

The FDA has received a total of 592,059 adverse event reports for all products in their database, but specific report counts for this exact drink are not available. For the ingredient calcium, safety data shows that high intakes might increase the risk of heart disease and prostate cancer. Very high levels 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].

Our recommendation

Data not available for a specific recommended dosage for this product. Be mindful that calcium can reduce the absorption of certain medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. If you take any of these, separate your intake of this drink by several hours. Given the lack of specific safety data for this energy drink, we recommend consuming it in moderation and being aware of your total daily calcium intake from all sources.

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