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NOW Supplements Calcium Hydroxyapatite Caps
SCIENTIFIC SCORE
Possibly Effective
Based on 2 Researches
7.5
USERS' SCORE
Good
Based on 3 Reviews
8.4
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

8
Calcium maltobionate supports bone health
Decrease in Facial Bone Density with Aging and Maintenance Effect of Calcium Maltobionate Ingestion in Japanese Adult Women: A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Trial.
Relevant but not definitive impact
We conducted a study to investigate how calcium maltobionate affects bone density in healthy Japanese women, particularly focusing on those who are pre- and post-menopausal. In a well-structured trial, 48 women aged between 30 and 69 were randomly divided into two groups: one received calcium maltobionate tablets while the other took a placebo designed to mimic the calcium content.

Over 24 weeks, we measured changes in facial and calcaneal bone density along with bone resorption markers. Our results indicated that facial bone mineral density declines more rapidly than that of other areas like the lumbar spine. Importantly, we observed that continuous intake of calcium maltobionate helped to slow down this decline in bone density for women in both menopausal stages, suggesting its potential role in osteoporosis prevention.

Overall, we found that facial bone mineral density may serve as an important indicator of bone health in middle-aged women. While our study highlights the beneficial aspects of calcium maltobionate, it’s essential to note that the individual effects of calcium itself could not be isolated from the compound used in the treatment.
Read More
7
Calcium aids bone health
The effect of different traditional Chinese exercises on bone mineral density in menopausal women: a systematic review and network meta-analysis.
Calcium's isolated effects unclear.
This systematic review aimed to understand how different traditional Chinese exercises, combined with calcium supplementation, can improve bone mineral density (BMD) in postmenopausal women. Researchers examined a variety of approaches—such as Tai Chi and Baduanjin—while comparing these exercises to control groups that either did not participate in exercise or received only calcium supplements.

The results revealed that exercises like Tai Chi were effective in improving BMD across multiple sites in the body, including the lumbar spine and femoral neck. When calcium supplementation was paired with these exercises, particularly with Baduanjin, there were notable increases in bone density. However, it’s important to note that while calcium showed some benefit, it was mostly in conjunction with the exercise interventions, making it hard to fully separate the effects of calcium from those of the exercises.

Ultimately, while both calcium supplementation and traditional Chinese exercises like Tai Chi and Baduanjin can contribute to bone health in menopausal women, the study highlights that the exercises may be the most effective method for preventing bone loss.
Read More

Most Useful Reviews

8
Reduced tooth sensitivity
Following menopause, I had a DEXA scan which revealed low bone density, prompting me to take calcium. Initially, I used calcium citrate but observed no significant changes. Upon switching to this calcium, my tooth sensitivity disappeared in days, which was surprising as it had worsened over the previous year. Moreover, I have not experienced palpitations recently, likely thanks to the calcium. I take a magnesium tablet daily and hope for positive effects on my bones, alongside my exercises.
Read More
9.5
Maximally assimilated calcium
If you have bone tissue issues and are going through menopause—it’s crucial to have this specific calcium. It’s formulated for maximum absorption by the body.
Read More
6.8
Excellent for hair growth
I ordered this calcium for my mother, who has been experiencing menopause for 3 years. The menopause support along with this calcium has resulted in her hair and nails growing perfectly without any deficiencies. The dosage is just right!
Read More

Medical Researches

SCIENTIFIC SCORE
Possibly Effective
Based on 2 Researches
7.5
  • All Researches
8
Calcium maltobionate supports bone health
Decrease in Facial Bone Density with Aging and Maintenance Effect of Calcium Maltobionate Ingestion in Japanese Adult Women: A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Trial.
Relevant but not definitive impact
We conducted a study to investigate how calcium maltobionate affects bone density in healthy Japanese women, particularly focusing on those who are pre- and post-menopausal. In a well-structured trial, 48 women aged between 30 and 69 were randomly divided into two groups: one received calcium maltobionate tablets while the other took a placebo designed to mimic the calcium content.

Over 24 weeks, we measured changes in facial and calcaneal bone density along with bone resorption markers. Our results indicated that facial bone mineral density declines more rapidly than that of other areas like the lumbar spine. Importantly, we observed that continuous intake of calcium maltobionate helped to slow down this decline in bone density for women in both menopausal stages, suggesting its potential role in osteoporosis prevention.

Overall, we found that facial bone mineral density may serve as an important indicator of bone health in middle-aged women. While our study highlights the beneficial aspects of calcium maltobionate, it’s essential to note that the individual effects of calcium itself could not be isolated from the compound used in the treatment.
Read More
7
Calcium aids bone health
The effect of different traditional Chinese exercises on bone mineral density in menopausal women: a systematic review and network meta-analysis.
Calcium's isolated effects unclear.
This systematic review aimed to understand how different traditional Chinese exercises, combined with calcium supplementation, can improve bone mineral density (BMD) in postmenopausal women. Researchers examined a variety of approaches—such as Tai Chi and Baduanjin—while comparing these exercises to control groups that either did not participate in exercise or received only calcium supplements.

The results revealed that exercises like Tai Chi were effective in improving BMD across multiple sites in the body, including the lumbar spine and femoral neck. When calcium supplementation was paired with these exercises, particularly with Baduanjin, there were notable increases in bone density. However, it’s important to note that while calcium showed some benefit, it was mostly in conjunction with the exercise interventions, making it hard to fully separate the effects of calcium from those of the exercises.

Ultimately, while both calcium supplementation and traditional Chinese exercises like Tai Chi and Baduanjin can contribute to bone health in menopausal women, the study highlights that the exercises may be the most effective method for preventing bone loss.
Read More

User Reviews

USERS' SCORE
Good
Based on 3 Reviews
8.4
  • All Reviews
  • Positive Reviews
  • Negative Reviews
8
Reduced tooth sensitivity
Following menopause, I had a DEXA scan which revealed low bone density, prompting me to take calcium. Initially, I used calcium citrate but observed no significant changes. Upon switching to this calcium, my tooth sensitivity disappeared in days, which was surprising as it had worsened over the previous year. Moreover, I have not experienced palpitations recently, likely thanks to the calcium. I take a magnesium tablet daily and hope for positive effects on my bones, alongside my exercises.
Read More
9.5
Maximally assimilated calcium
If you have bone tissue issues and are going through menopause—it’s crucial to have this specific calcium. It’s formulated for maximum absorption by the body.
6.8
Excellent for hair growth
I ordered this calcium for my mother, who has been experiencing menopause for 3 years. The menopause support along with this calcium has resulted in her hair and nails growing perfectly without any deficiencies. The dosage is just right!
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