Can You Take Calcium with Apple Cider?
Yes, it is safe to take calcium supplements with apple cider or apple cider vinegar, and emerging evidence suggests that apple cider vinegar may actually enhance calcium absorption and potentially reduce kidney stone risk.
The Interaction Between Calcium and Apple Cider Vinegar
The acidity in apple cider vinegar (primarily acetic acid) can actually improve calcium absorption, particularly for calcium carbonate supplements. This is because calcium carbonate requires an acidic environment for optimal dissolution and absorption 1. The guideline evidence specifically notes that calcium carbonate "should be taken with meals, since acidity improves absorption" 1.
How Apple Cider Vinegar May Benefit Calcium Metabolism
Research demonstrates that vinegar consumption may provide additional benefits beyond simple absorption:
Enhanced intestinal calcium absorption: A study in ovariectomized rats showed that dietary vinegar (1.6%) significantly increased calcium absorption and femoral calcium content, suggesting protective effects against bone loss 2
Kidney stone prevention: A 2019 study found that daily vinegar intake increased urinary citrate (which prevents stones) and decreased urinary calcium excretion (which contributes to stones), reducing kidney stone recurrence through epigenetic mechanisms 3
Practical Recommendations
If you're taking calcium carbonate (the most common and least expensive form):
- Taking it with apple cider vinegar or apple cider is perfectly safe
- The acidity may actually enhance absorption
- Standard dosing: 500-1000 mg calcium carbonate with meals 1
If you're taking calcium citrate:
- This form is less dependent on acidity for absorption 1
- Apple cider vinegar won't harm absorption but provides less benefit compared to calcium carbonate
- Can be taken with or without meals
Important Caveats
Total calcium intake matters more than the source:
- Adults 19-50 years: 1,000 mg/day recommended
- Women >50 years and men >70 years: 1,200 mg/day recommended
- Do not exceed 2,000-2,500 mg/day total (from all sources: diet + supplements) 1
Dietary calcium is preferred over supplements:
- Guideline evidence emphasizes that "consumption of calcium-rich foods and beverages is the preferred approach" 1
- Supplemental calcium (but not dietary calcium) modestly increases kidney stone risk 1
- Assess your dietary intake first before adding supplements
Monitor sodium intake concurrently:
- High sodium intake increases urinary calcium excretion 4
- Target ≤2,300 mg sodium daily if you have calcium stones or high urinary calcium 4
The Bottom Line
There is no contraindication to taking calcium supplements with apple cider or apple cider vinegar. In fact, the acidity may enhance calcium carbonate absorption, and vinegar consumption may provide additional metabolic benefits for calcium metabolism and kidney stone prevention 3, 2. However, prioritize getting calcium from food sources when possible, and ensure your total daily calcium intake stays within recommended limits 1.