Yes I believe there ismagnesium in it can you take that? OK glad to help

They have algaecal basic with no K in it for people on thinners.

I am wondering how many of you that take algae cal have seen the improvements they are guaranteeing every time you get a dexa scan??? I also wonder if they really take their stuff back without a big hassle and if they really refund your money??? Is there anyone out there that knows from personal experience?

from their website:
AlgaeCal Guarantee
Your “Stronger Bones For Life” Guarantee. You need strong bones for the rest of your life to enjoy rather than endure your golden years. With our guarantee, you can continue enjoying your favorite activities for the rest of your days. Measurable improvements will appear at 6 months from when you start your AlgaeCal Plus and Strontium Boost program. So if your next DEXA scan is scheduled half a year or more from now, we GUARANTEE you will see a bone density INCREASE. You may choose to wait for your next scheduled scan so that it is paid for by your insurance, or you may choose to pay out of pocket to check your results earlier. Either way is fine. Just allow at least 6 consecutive months of taking the products as directed before your follow-up scan. We encourage you to take a scan every year to make sure you’re still building new bone. IMPORTANT: Ensure you get your DEXA scan at the same clinic every time. Ideally, you’d get your scan on the same machine, too. That way, every scan is directly comparable to the last. If any DEXA does not show an improvement in either hip OR spine bone density, you will be REFUNDED for ALL products purchased since your previous scan.
In other words, “scan to scan to scan” improvements MUST be yours for the rest of your life. Now it’s only a matter of making a decision. We hope you choose to join the thousands who have opted to Break Free.

Risk-Free Return Policy - You’re not “stuck” with AlgaeCal if you don’t like it. That’s because you get 1 full year to try any of our products. If for whatever reason you’re not satisfied, we’ll refund all unopened and even partially used bottles. All you need to do is contact us for a Return Merchandise Authorization (RMA) number, and send back the unopened bottles WITHIN 1 YEAR of PURCHASE.
You can reach us at: USA/Canada – (Phone number can only be seen by the question and answer creators) Int’l – (Phone number can only be seen by the question and answer creators)
Email: (Email address can only be seen by the question and answer creators)
Important Notice: Packages returned without an RMA number won’t be accepted so please make sure to get one before sending it back. Return postage costs are the responsibility of the customer.

from AlgaeCal website:

Drug Interactions - Calcium supplements, including AlgaeCal, should not be taken at the same time of day as some classes of drugs. Please leave 3 hours between your AlgaeCal and the following medications (unless otherwise noted):
⦁ Quinolone antibiotics AND other antibiotics
⦁ Traditionally-prescribed bone drugs (3 - 4 hours apart)
⦁ Some heart medications
⦁ Thyroid medications (4 hours apart)
⦁ Water pills
⦁ Iron supplements
⦁ Strontium supplements
This drug interaction information is just a brief overview. Always check with your doctor for details about possible interactions between AlgaeCal products and your medications. In some cases, calcium reduces the effectiveness or required dose for certain medications. Often the solution is to take calcium and the medication at a different time of the day. Your doctor should be consulted if you have any questions whatsoever.