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NOW Supplements Calcium Hydroxyapatite Caps
SCIENTIFIC SCORE
Possibly Effective
Based on 2 Researches
7.5
USERS' SCORE
Moderately Good
Based on 3 Reviews
7.8
Supplement Facts
Serving Size:  2 Capsules
Amount Per Serving
%DV
Calcium (elemental)(from 2,273 mg MCHA)**
500 mg
38%
Phosphorus (elemental)(from 2,273 mg MCHA)**
200 mg
16%

Top Medical Research Studies

7
Calcium reduces constipation risk
Association between dietary calcium intake and constipation in a metabolic syndrome population: evidence from NHANES 2005-2010.
Significant relationship with MetS
We explored how calcium intake relates to constipation, particularly focusing on individuals with metabolic syndrome, a condition that significantly impacts health. Using data from the National Health and Nutrition Examination Survey conducted between 2005 and 2010, we assessed the dietary habits of participants and looked at how often they experienced constipation.

Our findings suggest a noteworthy connection: as dietary calcium intake increases, the risk of constipation decreases among those with metabolic syndrome. This suggests that calcium could play a beneficial role in gastrointestinal health.

By analyzing dietary recalls and bowel movement frequency, we provided valuable insights into how making dietary changes can potentially improve symptoms for those affected by metabolic syndrome. This emphasizes the importance of dietary calcium as a simple yet impactful strategy for managing gastrointestinal issues in this specific population.
Read More
8
Calcium effects on constipation assessed
Efficacy and Safety of LBSC in Drug Induced Constipation Associated With Functional Gastrointestinal Disorder: A Double-Blind, Randomized, Interventional, Parallel, Controlled Trial a Clinical Study on LBSC for Drug Induced Constipation Associated With FGIDs.
Study complexity limits calcium assessment
We embarked on a study to understand how calcium, alongside other treatments, impacts drug-induced constipation linked to functional gastrointestinal disorders (FGIDs). Our research involved a double-blind, randomized trial with 168 participants suffering from constipation triggered by medications. Participants were divided into two arms: a placebo group and another group receiving a combination of atorvastatin, atenolol, metformin, amitriptyline, and calcium. Both groups took the treatment for 35 days and were monitored for changes in bowel function and constipation severity.

While the study results indicated that the combination treatment, including calcium, was safe and helped manage constipation symptoms associated with FGIDs, it's essential to note that the study design made it challenging to determine the individual effect of calcium. Although participants experienced improvements, we couldn't isolate how much of that success came solely from calcium, given it was part of a multi-drug regimen. Thus, while calcium appeared effective within the combined treatment, the specific role of calcium alone remains unclear.

Importantly, no significant adverse effects were reported, underscoring the safety of this approach. Overall, we found that while the multi-treatment was beneficial, we still have questions about the exclusive benefits of calcium on its own for constipation.
Read More

Most Useful Reviews

6
Calcium consumption advice
The small intestine can only absorb 500mg of calcium at a time. Excess calcium isn't expelled through faeces, leading to an accumulation in the intestines, which absorbs significant amounts of water, resulting in constipation. Therefore, it's best to take 500mg at once, divided throughout the day. Taking calcium tablets turns out to be the most economical approach.
Read More
3
Calcium improvement issues
It elevated my calcium levels, but unfortunately, it caused constipation, leading me to stop its use.
Read More
7
Calcium carbonate warning
This type of calcium boasts the best absorption rate. I wouldn't recommend calcium carbonate as a necessity for my family, as prolonged use may lead to constipation.
Read More

Medical Researches

SCIENTIFIC SCORE
Possibly Effective
Based on 2 Researches
7.5
  • All Researches
8
Calcium effects on constipation assessed
Efficacy and Safety of LBSC in Drug Induced Constipation Associated With Functional Gastrointestinal Disorder: A Double-Blind, Randomized, Interventional, Parallel, Controlled Trial a Clinical Study on LBSC for Drug Induced Constipation Associated With FGIDs.
Study complexity limits calcium assessment
We embarked on a study to understand how calcium, alongside other treatments, impacts drug-induced constipation linked to functional gastrointestinal disorders (FGIDs). Our research involved a double-blind, randomized trial with 168 participants suffering from constipation triggered by medications. Participants were divided into two arms: a placebo group and another group receiving a combination of atorvastatin, atenolol, metformin, amitriptyline, and calcium. Both groups took the treatment for 35 days and were monitored for changes in bowel function and constipation severity.

While the study results indicated that the combination treatment, including calcium, was safe and helped manage constipation symptoms associated with FGIDs, it's essential to note that the study design made it challenging to determine the individual effect of calcium. Although participants experienced improvements, we couldn't isolate how much of that success came solely from calcium, given it was part of a multi-drug regimen. Thus, while calcium appeared effective within the combined treatment, the specific role of calcium alone remains unclear.

Importantly, no significant adverse effects were reported, underscoring the safety of this approach. Overall, we found that while the multi-treatment was beneficial, we still have questions about the exclusive benefits of calcium on its own for constipation.
Read More
7
Calcium reduces constipation risk
Association between dietary calcium intake and constipation in a metabolic syndrome population: evidence from NHANES 2005-2010.
Significant relationship with MetS
We explored how calcium intake relates to constipation, particularly focusing on individuals with metabolic syndrome, a condition that significantly impacts health. Using data from the National Health and Nutrition Examination Survey conducted between 2005 and 2010, we assessed the dietary habits of participants and looked at how often they experienced constipation.

Our findings suggest a noteworthy connection: as dietary calcium intake increases, the risk of constipation decreases among those with metabolic syndrome. This suggests that calcium could play a beneficial role in gastrointestinal health.

By analyzing dietary recalls and bowel movement frequency, we provided valuable insights into how making dietary changes can potentially improve symptoms for those affected by metabolic syndrome. This emphasizes the importance of dietary calcium as a simple yet impactful strategy for managing gastrointestinal issues in this specific population.
Read More

User Reviews

USERS' SCORE
Moderately Good
Based on 3 Reviews
7.8
  • All Reviews
  • Positive Reviews
  • Negative Reviews
6
Calcium consumption advice
The small intestine can only absorb 500mg of calcium at a time. Excess calcium isn't expelled through faeces, leading to an accumulation in the intestines, which absorbs significant amounts of water, resulting in constipation. Therefore, it's best to take 500mg at once, divided throughout the day. Taking calcium tablets turns out to be the most economical approach.
Read More
3
Calcium improvement issues
It elevated my calcium levels, but unfortunately, it caused constipation, leading me to stop its use.
7
Calcium carbonate warning
This type of calcium boasts the best absorption rate. I wouldn't recommend calcium carbonate as a necessity for my family, as prolonged use may lead to constipation.
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