Douglas Laboratories Energy/Sports Formula
Brand: Douglas Laboratories · Form: TABLET [E0155]
Our assessment
The evidence shows that the Douglas Laboratories Energy/Sports Formula contains calcium as a key mineral. Based on the data, calcium plays a critical role in bone health and muscle function, but you need to be aware of the specific risks and interactions associated with supplementation. Our assessment is that this product may be beneficial for supporting your energy and sports performance goals, but only if you are mindful of your total calcium intake from all sources.
How it works
Think of calcium as a structural building block and a cellular messenger. It supports bone mineralization, helping to maintain bone density and strength, which is essential for any physical activity [NIH ODS]. It also supports neuromuscular relaxation, meaning it helps your muscles relax and your nerves signal properly after exercise [NIH ODS]. This dual role makes it a foundational nutrient for sports recovery and performance.
Safety profile
FDA received 592059 total adverse event reports across all supplements, though this number is not specific to this product alone [FDA data]. For calcium specifically, high intakes are linked to several risks. Some research suggests high calcium intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. High blood and urine levels of calcium 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 know 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 use this product with caution. Do not exceed the total daily calcium recommendation of 1,000 to 1,200 mg from food and supplements combined [NIH ODS]. If you take any of the listed medications, take this supplement at least two hours apart from them [NIH ODS]. Be honest with your pharmacist or doctor about all supplements you take to avoid potential interactions. Data on the other specific ingredients in this formula is not available.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Douglas Laboratories |
|---|---|
| Serving Size | |
| Contents | 120.0 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