Nature's Sunshine Methyl Combo

Our assessment

The evidence shows that this product contains calcium, a mineral essential for bone health and nerve function. However, based on the data provided, we cannot assess the full benefits or risks of the specific combination formula, as only ingredient-level data for calcium is available. You should approach this supplement with caution and consult your healthcare provider before starting it, especially if you have any underlying health conditions or take medications.

How it works

Calcium is a critical mineral in your body. It supports bone mineralization, helping to maintain strong bones and teeth, and plays a role in neuromuscular relaxation, which is important for proper muscle function and nerve signaling [NIH ODS]. Think of it as a key building block for your skeletal structure and a messenger for your nerves and muscles.

Safety profile

The FDA has received a total of 592,059 adverse event reports for this product's brand. Specific side effects for this formula are not broken out in the data. However, for calcium specifically, high intakes may increase the risk of heart disease and prostate cancer. 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]. Calcium can also reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].

Our recommendation

Data not available to provide a specific dosing recommendation for this product. Because of the potential for serious side effects and drug interactions, you should only take this supplement under the guidance of a healthcare professional who can review your full medical history and current medications. Do not exceed the dosage listed on the label without medical advice.

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