I don’t know the answer, I’m sorry. My Dr wanted me on the drugs but I studied the good and the side effects of them and decided to search for herbal and natural remedies. I tried algie cal with strontium…. Mistake. Read and researched strontium… quit but didn’t help and took both for six months, not better but got worse so stopped, prayed searched and found Mira Calton and if she reversed her advanced Osteo with bones of 80 year old woman’s bone and her doctor told her to move where her family could take care of her… no hope! then I can. She was only 30 when diagnosed…. It took her years like 2 but she is normal bones today. Look up Mira and Jayson Calton. I’m starting all the products she used ! With prayer of my church family and friends! My husband has heart trouble he is going to start this with me. One thing for sure I won’t be damaging my body nor health. They have books you can read and videos to help you understand. I ordered 2 books , REBUILD YOUR BONES , 12 week osteoporosis protocol. The other is, THE MICRONUTRIENT MIRACLE, 28 day plan to lose weight, increase your energy, and Reverse Disease. AMAZING!!!! You will understand vitamins and nutrients and how to take them to get FULL BENIFITS from them for you bones and body! All their products are third party tested and the omegas are tested EVERY TIME. They patented two products so couldn’t be changed. So I hope this helps you. It is so stressful and confusing the choice you need to make. I am very advanced Osteo, but there is HOPE. I’m going to give my body what it needs to do what God made it to do. It took years to get me here so I know it won’t be overnight but it will start immediately in the direction or reversing Osteo and nourishing my body and bones. Pray and hope this helps you.🙏🌺😄pray a prayer for me. Their products for three months is much cheaper and better than others I have tried… OsteoPro and AlgaeCalPlus with Strontium Booster. Wish I had found Mira and Jayson first I feel I’d be much better now instead of worse. Just type their names in… God bless all our journeys to success! We do Not have a disease! We actually haves body undernourished. It is reversible just like all others are.😁♥️