Highlights
- Naturally derived calcium supplement from red algae—aims to support bone health without heavy metals.
- Users report slow but steady improvements in bone density scans and digestive comfort.
- Typically well tolerated with minimal side effects, and no reported stomach upset.
Overview
Bone loss is a long-term but serious issue that can easily be overlooked until a diagnosis or a fracture presents it as a reality. As we get older, it becomes harder to have strong, good bones, and in addition to this, when we use traditional calcium supplements, this will only slow down the process instead of reversing it.
This is what has left people seeking a better way to increase bone strength and density naturally.
AlgaeCal Plus is a bone-building supplement clinically supported with plant-based calcium and 15 other nutrients required to build bones, claims to be clinically proven to prevent bone loss, and even rebuild bone.
Does AlgaeCal Plus really promise results in terms of bone density? Keep reading because we will review its ingredients, advantages, scientific studies, and consumer experiences.

Algaecal Plus Review – Health Insiders Images
What Is Algaecal Plus?
AlgaeCal Plus is a carefully crafted bone health supplement that is intended to help improve the health of bones and make them stronger. This applies to adults who have problems with their bone density.
This natural mix includes plant-derived calcium in marine algae along with 16 natural nutrients, such as magnesium, boron, vitamin C, D3 and K2-7 among others.
All these ingredients provide a synergistic effect in providing support to bones, mineral absorption and slowing down the amount of bone loss at a greater rate than ordinary rock-based calcium supplements.
A product specifically targeted towards those worried about osteopenia or osteoporosis, AlgaeCal Plus may assist in bone density, as evident through several clinical studies-even in elderly individuals.
Algaecal Plus – Quick Facts & Specs

- Form:Capsules
- Type:Dietary Supplement
- Benefit:Supports bone density growth and reduces bone loss
- Brand:Algaecal
- Price:$80.00*
- Used For:Osteopenia, osteoporosis, bone strength maintenance
- Recommended Dosage:4 capsules daily (2 capsules twice a day with meals)
- Number of Servings Per Container:30 servings (120 capsules)
- Active Ingredients:Plant-sourced calcium, magnesium, boron, vitamin D3, vitamin K2-7, vitamin C, strontium, and more
Pros and Cons of Algaecal Plus

- Clinically supported to increase bone density
- Contains 16 essential bone-supporting nutrients

- More expensive than traditional calcium supplements
- Requires taking four capsules daily
- Results may vary and take months to show
- Some users report minimal improvement in specific bone areas
- Not suitable for those allergic to marine algae
- Must be consistently taken for optimal results
How Does Algaecal Plus Work?
AlgaeCal Plus is a unique, marine-based supplement that helps maintain bone health by restoring a full complement of 16 bone-essential nutrients in your body.
In contrast to traditional rock-based calcium, which slows bone loss, plant-based AlgaeCal has a high bioavailability of calcium, magnesium, trace minerals, and contains both vitamins D3, K2-7, and vitamin C, and thus may help with bone regeneration.
These compounds act synergistically to promote bone modeling and help to increase calcium absorption in bone and rather than in arteries or kidneys.
Algaecal Plus Ingredients
There are several key vitamins and minerals in this supplement. Here are some of the primary active ingredients:
AlgaeCal® (Mesophyllum Superpositum) – This marine algae is a natural, plant-based calcium source that contains all 13 essential bone-supporting minerals. It’s easily absorbed by the body, unlike traditional rock-based calcium supplements.
A study published in the International Journal of Medical Sciences showed AlgaeCal increased bone mineral density in women over 40 without side effects.[1]
Calcium (720 mg from AlgaeCal) – Calcium is essential for building and maintaining strong bones. It also supports heart health, muscle contractions, nerve transmission, and more. Sourced from algae, this calcium is gentle on the stomach and highly bioavailable.
Magnesium (350 mg) – Magnesium complements calcium by supporting bone structure and helping regulate calcium metabolism. It also plays a role in over 300 enzyme reactions in the body, including energy production and nerve function.
A study in Nutrients showed that magnesium intake is positively associated with bone mineral density in adults.[2]
Vitamin D3 – Vitamin D3 helps your body absorb calcium and supports immune, muscle, and brain function. Without it, calcium absorption is compromised.
Research published in the American Journal of Clinical Nutrition confirms that D3 supplementation significantly increases calcium absorption and bone density.[3]
Vitamin K2 (100 mcg, MK-7) – Vitamin K2 directs calcium into bones and away from arteries, reducing the risk of arterial calcification. It’s critical for proper bone remodeling.
A study in the Journal of Bone and Mineral Research found that MK-7 supplementation improves bone strength and slows bone loss.[4]
Boron – Boron helps the body retain calcium and magnesium and boosts the metabolism of vitamin D, making it essential for bone health.
Vitamin C (50 mg) – Vitamin C is crucial for collagen production, which forms the framework of bones. It also supports immunity and acts as a powerful antioxidant.
Strontium (Trace amount) – Strontium supports bone health by both stimulating bone formation and slowing bone breakdown, a rare dual action among minerals.
Benefits of AlgaeCal Plus
Increases Bone Density: The AlgaeCal Plus is clinically proven to increase bone density even in older people unlike the normal calcium supplements.
Improves Bone Strength and Flexibility: It contains 16 bone-supporting nutrients, claiming to increase not only bone density but also bone strength and flexibility.
Reduces Osteopenia and Osteoporosis Risk: Consistent use may prevent osteopenia as well as decrease the risk of fracture due to weakening of bones.
Boosts Calcium Absorption: The combination of vitamin D3 and K2-7 allows calcium to be absorbed efficiently and leads it to the bones-not the soft tissues, such as the arteries.
AlgaeCal Plus Side Effects
Mild Digestive Issues: Digestive disturbance such as bloating, gas and stomach discomfort (usually with no food or increased dosage), is reported in some users.
Constipation in Sensitive Individuals: This phenomenon rarely occurs, compared to the case of rock-based calcium, but some people may get constipated in case they drink insufficient water.
Iodine Sensitivity: Since AlgaeCal is derived from marine algae, this product includes natural iodine. People with thyroid or iodine sensitivity are advised to speak to their healthcare provider.
Interactions with Medications: AlgaeCal Plus can have an interaction with medication that can alter the absorption of some medications (e.g., thyroid drugs or antibiotics) when taken together. Doses should be spaced.
Allergic Reactions: The product is plant-based, but people with an allergic reaction to the marine or algae should be careful or consult a health expert prior to its application.
Is Algaecal Plus Safe?
The safety of AlgaeCal Plus considerably relies on the health status of a person and their tolerance to the supplements.
It contains 16 bone-essential nutrients and is produced using plant-based calcium that can be consumed by most adults without any possible side effects.
Nevertheless, certain individuals can have a minor gastrointestinal side effect or a drug reaction.
Individuals having pre-existing conditions, thyroid issues, and shellfish allergies are advised to speak to their healthcare provider prior to starting the usage of AlgaeCal Plus.
Algaecal Plus Customer Reviews & Results
Not feeling well after taking this supplement
I was diagnose with osteoporosis this year (2020) and was prescribed with 6 monthly injection of Prolia – hence when I saw the add for Algae cal I bought straight away as I don’t want to have this injection. When my order arrived I took 1 tablet straightaway after lunch. I feel the difference on my body with one tablet – I feel lethargic (feeling very very tired). Took another tablet after dinner – and I felt I need to go to bed early and find myself struggling to get out of bed the next morning. I still took them for 3 days and I got worse and worse. I stopped taking them now and my body went back to normal. I sleep and wake up as normal. So I guess this tablet is the culprit. I hope I can get refund when I return them. I bought 3 Algae cal and 3 Stronium. – Zony Marcelo
Helped Some, But Progress Was Slow
I’ve used AlgaeCal Plus for months. My latest scan showed minor improvement. It’s not a miracle, but I appreciate the natural ingredients and plan to continue for now. – Olivier Fortin
Easy on Stomach, Still Evaluating Results
I am very happy with the results from using the probiotic I ordered from Nucific. It helps keep me regular with no side effects & has helped me with my weight loss. – Madeline R.
How to Use AlgaeCal Plus?
Take four capsules of AlgaeCal Plus daily—two in the morning and two in the evening, always with meals for best absorption.
While the standard dosage is four capsules per day, speak to your healthcare provider if you’re petite or have unique health needs to see if adjustments are appropriate.
AlgaeCal Plus: Packages, Deals, Prices
- 1 Bottle (Try It Out) – $80.00 (One-time purchase)
- 1 Bottle (Subscribe & Save) – $70.00/month (Save 13%)
- 3 Bottles (3-Month Supply) – $213.00 (Save 11%) – $71.00/month
- 6 Bottles (6-Month Supply) – $366.00 (Save 24%) – $61.00/month
- 12 Bottles (12-Month Supply) – $672.00 (Save 30%) – $56.00/month
Algaecal Plus: Packages, Deals, Prices & Where to Buy It
You can purchase AlgaeCal Plus directly from Amazon, where you’ll find various pack sizes and subscription options.
Final Verdict
AlgaeCal Plus is sold as a plant-based alternative to calcium supplements, containing a combination of ingredients that purport to help maintain bone health. Although there is a chance of favorable outcomes as appears in some clinical studies, not all experience the same.
The product also necessitates adherence to a daily routine of consumption, a factor that might not fit everyone, particularly considering that it is necessary to consume four (4) capsules each day. Moreover, the product has a premium price, and the occurrence of slight digestion reactions might come in as a restrictive factor.
Not every user claims to feel any improvements, and some are worried about the duration that is required to notice the results. As with several supplements, personal results may be varied, and it should not be used by people having allergies or existing health conditions.
Frequently Asked Questions
Q: How many capsules of AlgaeCal Plus should I take daily?
A: You should take 4 capsules daily, ideally split into two doses of 2 capsules with meals for better calcium absorption.
Q: Can I take AlgaeCal Plus with my prescription medications?
A: Yes, but it’s best to take this capsule 2–3 hours apart from medications to avoid interaction and maximize absorption.
Q: Is AlgaeCal Plus safe for those with shellfish allergies?
A: Yes, This supplement does not contain any shellfish and is safe for individuals with shellfish allergies.
Q: Does AlgaeCal Plus cause constipation or bloating like other calcium supplements?
A: Most people do not experience constipation or bloating with AlgaeCal Plus, as it’s made from plant-based calcium that’s easier to digest.
Q: Is AlgaeCal Plus tested for heavy metals and contaminants?
A: Yes, every batch is third-party tested for heavy metals and contaminants to ensure safety and purity.
Q: Can I open AlgaeCal Plus capsules if I have trouble swallowing pills?
A: Yes, This supplement capsules can be opened and the powder mixed into cool foods or drinks like smoothies or yogurt.
5 Sources
Health Insiders relies on peer-reviewed studies, academic research institutions, and medical associations. We avoid using tertiary references. You can learn more about how we ensure our content is accurate and current by reading our editorial policy.
[1] AlgaeCal Plus and Strontium Boost Increase Adult Bone Density after Six Months: https://hcp.algaecal.com/research/clinical-studies#:~:text=This%20human%20study%20involving%20more,each%20year%20after%20age%2040.
[2] Magnesium and Osteoporosis: Current State of Knowledge and Future Research Directions: https://pmc.ncbi.nlm.nih.gov/articles/PMC3775240/
[3] Vitamin K: https://ods.od.nih.gov/factsheets/VitaminK-Consumer/
[4] Vitamin D and your health: Breaking old rules, raising new hopes: https://www.health.harvard.edu/staying-healthy/vitamin-d-and-your-health-breaking-old-rules-raising-new-hopes
[5] Nothing Boring About Boron: https://pmc.ncbi.nlm.nih.gov/articles/PMC4712861/
Didn’t Improve My Bone Density
Took AlgaeCal Plus faithfully for six months. My DEXA scan showed no real improvement. For the price, I expected better. Not worth the hype.
Too Expensive for Minimal Effect
After consistent use, I noticed barely any change. Four capsules daily is a hassle, and the cost is just not justified by the slow or mild results.
Gradual Results, Still Monitoring Progress
I’ve been taking AlgaeCal Plus for a few months. No major changes yet, but no side effects either. Hoping for more visible improvement in my next bone scan.
I didn't saw noticeable results
I took AlgaeCal Plus for over four months with zero improvement in my bone scans. Felt like a waste of time and money
Didn’t Notice Any Major Bone Changes
I used AlgaeCal Plus consistently for months but didn’t see a noticeable improvement in my bone density reports. It might not work for everyone.
What was I doing wrong?
I have been taking Algecal for 5 years and my bone density has processed to osteoporosis. Don’t know what has happened.
It Made Me Sick to My Stomach.
Algaecal Plus is easy to swallow but it made me sick to my stomach. Also, my tt made me hyper and nervous. I had to put them down. This is what happened to mine.