Strontium Support II


Supports bone mineral density

  • Clinically effective dose
  • Promotes healthy bone growth and mineralization
  • First strontium citrate supplement in the world
Gluten Free
If you decide a subscription is not for you, it can be cancelled after 30 days.

Strontium is an important mineral for bone health and it is found in most foods where calcium is found.

While supplements like calcium, vitamin D and vitamin K maintain bone health, and conventional bone drugs reduce bone degradation, strontium actually helps rebuild bone. It does this by increasing osteoblast production while decreasing osteoclast production, resulting in increased bone development and decreased bone loss. Since strontium is similar in molecular structure to calcium, it is thought to activate the calcium receptors in the bone, stimulating the building of new bone and telling the body to use calcium effectively in bone tissue, while inhibiting bone breakdown. Strontium Support II is an excellent addition to calcium supplementation for those with osteoporosis or osteopenia, post-menopausal women or those at an increased risk of bone fractures.

AOR Advantage

In 2002, AOR introduced the world’s first supplemental strontium citrate for those with osteoporosis, osteopenia, post-menopausal women and those at an increased risk of bone fractures. AOR’s Strontium Support II comes in two sizes and provides an effective dose of this bone health powerhouse in a convenient one to two capsule-a-day formula.




Strontium is a trace mineral which concentrates in the skeletal system, where it supports the function of osteoblasts (the cells which form new bone) while reducing the differentiation and activity of osteoclasts (the cells which resorb old bone). Strontium Support II helps support bone mineral density.


AOR™ guarantees that all ingredients have been declared on the label. Contains no wheat, gluten, corn, nuts, peanuts, sesame seeds, sulphites, mustard, soy, dairy, eggs, fish, shellfish or any animal byproduct.

Adult Dosage

Take one or two capsules daily on an empty stomach, at least two hours before or after consuming food, calcium or milk since these can significantly reduce strontium absorption if taken together. Ensure an adequate daily intake of calcium and vitamin D.


Do not use if you are pregnant or breastfeeding, if you have or are at high risk for blood clots (e.g. if you are temporarily or permanently immobilized, over the age of 80, taking birth control pills, etc.), heart diseases and/or circulatory problems (e.g. Venous Thromboembolism (VTE), heart attack, peripheral arterial disease, stroke, high blood pressure, hyperlipidemia, diabetes, etc.), or have kidney disease. May cause temporary transient increases in levels of creatine kinase that are unassociated with any disorder. Discontinue use and consult a health care practitioner in case of rash or hypersensitivity, as this may be a sign of a serious allergic reaction (DRESS or Stevens-Johnson syndrome). Consult a health care practitioner for use beyond six months.

Main Application
  • Bone health
  • Osteoporosis
  • Osteopenia
  • Increases bone density
  • Reduces risk of fractures

The information and product descriptions appearing on this website are for information purposes only, and are not intended to provide or replace medical advice to individuals from a qualified health care professional. Consult with your physician if you have any health concerns, and before initiating any new diet, exercise, supplement, or other lifestyle changes.

Serving Size: One Capsule

Non-medicinal Ingredients: sodium stearyl fumarate. Capsule: hypromellose.

Strontium Ranelate

Most of the clinical studies that found strontium effective for reducing fractures and increasing bone density were done using strontium ranelate. This form of strontium is a prescription drug used in Europe with excellent results and minimal side effects. However, the “ranelate” portion of this salt form of strontium is inactive; only the strontium produces physiological benefits. The use of strontium ranelate allowed a patent to be developed to protect this amazing discovery.

Studies using other forms of strontium are few, but they do exist and also show pronounced effects against bone degeneration, showing that strontium is the important molecule.

In a study using strontium ranelate, BMD showed an increase continuously over 10 years in osteoporotic women. The incidence of vertebral and nonvertebral fracture was lowered between five and 10 years than in a matched placebo group over five years. Therefore, the results proved that Strontium ranelate’s antifracture efficacy appears to be maintained long term.

Another study investigated bone microstructure changes as a target in osteoporosis treatment to increase bone strength and reduce fracture risk. 83 postmenopausal women with osteoporosis were given a dosage of 2g per day of strontium ranelate for a two year period. The double-double blind exploratory trial observed both bone mineral density and bone turnover markers. Distal tibia bone microstructure was assessed by high-resolution peripheral quantitative computed tomography. Both both density and bone thickness were shown to have increased increased throughout the treatment.

Strontium Citrate

A study that examined the effects of using strontium citrate in combination with other bone building nutrients in 158 adults provides compelling evidence that strontium citrate is effective at mitigating bone loss and stimulating new bone growth. Two groups of study participants agreed to follow an open-label bone-health supplement plan containing 680 mg of strontium citrate for six months after taking a DXA test of bone density, a 43-chemistry blood test panel and a quality of life inventory. Two weeks after the last subject completed, a second group of 58 was enrolled and followed the identical plan, but with a different bone-health supplement which also contained 682mg of strontium citrate.

There were no significant differences between the two groups in baseline bone mineral density (BMD) or in related BMD variables such as (age, sex, weight, percent body fat, fat mass, or fat-free mass). Both groups experienced a significant positive mean annualized percent change (MAPC) in BMD. Both groups also experienced a positive MAPC compared to baseline. The MAPC contrast between compliant and partially compliant subjects was significant for both plans. No clinically significant changes in a 43-panel blood chemistry test were found, nor were there any changes in self-reported quality of life in either group. Increased compliance was associated with greater increases in BMD in both groups. No adverse effects were reported in either group.

Calcium and Strontium: Take Both…

Calcium and Strontium can both play key roles in the health of your bones – if you use them properly. Animal studies suggest that Strontium is not effective if your calcium intake is not adequate and may even be counterproductive. Current “official” recommendations suggest an intake of 1000 milligrams of calcium for younger adults, and 1200 milligrams for people over the age of 50. Some evidence suggests that a still higher intake (1300-1600 milligrams) of total dietary calcium is more effective for lowering fracture risk in the elderly.

…But Never Together!

At the same time, however, it’s important to take your Strontium supplement separately from your calcium supplements. This is because calcium and Strontium use the same pathways for absorption in the intestinal tract, so swallowing a calcium supplement along with your Strontium can dramatically reduce absorption. So obviously, putting Strontium and calcium in the same pill is a recipe for bone health disaster, in which you don’t get the benefits of either nutrient!

How To Take Your Strontium

The best protocol – and the one used in the most recent clinical trials – is to take your Strontium either three hours after your last meal of the day, or one hour before breakfast in the morning, or both. While before bed might be easiest, studies do suggest that one last dose of calcium just before bedtime can help prevent excessive resorption of bone overnight. It may therefore be best to take all of your Strontium one to two hours before breakfast, leaving you free to take a calcium supplement just before you go to bed.

Another option may be to take it at night if you get up to use the washroom. While it is not recommended to do so if you’re not awake already since a good sleep is also essential for bone health and healing, this might be a viable option for those who are already up during the night.