Herb Pharm Horsetail
Brand: Herb Pharm · Form: LIQUID, SUPPLEMENT FORM [E0165]
Our assessment
The evidence shows that this product contains calcium, a mineral essential for bone health. Our assessment is that while calcium is a critical nutrient, you should not rely on horsetail as a primary source, and you must be careful about total calcium intake from all supplements. Data for horsetail specifically is limited, but the calcium content is relevant [NIH ODS].
How it works
Think of calcium as a building block for your skeleton. It supports bone mineralization and density, and it is also crucial for neuromuscular relaxation and nerve signaling [NIH ODS]. If you are taking this product for bone health, the calcium it provides works directly on your skeletal system.
Safety profile
FDA received 592,059 total adverse event reports across all supplement categories. For calcium specifically, high intakes may increase the risk of heart disease and prostate cancer. 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 urination, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Side effect report counts for horsetail alone are not available.
Our recommendation
We recommend you do not exceed the daily calcium RDA from all sources combined (supplements and food). If you take other medications, be aware that calcium can reduce the absorption of bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Start by reviewing your total daily calcium intake from diet and other supplements before adding this product. Consult your healthcare provider to determine if this is right for you, as data on horsetail's specific effects is not available.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Herb Pharm |
|---|---|
| Serving Size | |
| Contents | 4.0 fl. Oz. 118.4 mL |
| 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