I have been taking strontium for over 9 months now, along with doing yoga, walking and weight lifting, my bone density is reversing, from -2.7 to -2.3 in about a year, I have full faith in my decision of taking strontium, I take Bone Grow by Garden of life, order it from Amazon, I take strontium first thing in the morning and eat breakfast after 2 or 3 hours and then take 2 doses of calcium with lunch and dinner. I feel stronger and happier.