I have been a customer for some time and, in addition to marketing products of excellent quality, their service is very efficient. This product is very good and since taking it along with Vitamin D-3 the effects have really been potentiated and the pain has decreased significantly. I am 40 years old and I practice physical activities and before the use the pains were very intense, after, I can carry out the exercises and with great reduction of pains. I also felt a significant improvement in the joints, especially of the shoulder region. Of course I have consulted a professional and the use has been made under proper medical guidance and dosage. In my case, I take 2 tablets daily with 1 of D3-5,000. I therefore recommend a prior consultation. My mother also makes use of it, she is 70 years old and also felt a significant improvement of the pains. The results were perceived in approximately 90 days. Therefore, it is no use taking irregularly and without prescription. Obviously the supplements take time to be absorbed by the body as they are usually associated in daily doses of need and therefore every treatment must be followed with persistence and perseverance that the results will come. Good luck to all and thank the EVitamins for the care and care with us Brazilians. God bless them.