My wife is suffering from RA for past 1 year. Her age is 25. We shown her to ortho doctor and he gave lefra10 tablet and calcium vitamin tablets. My wife continued these tablets for 1 month. After consulting with Rheumatologist, doctor advised to stop lefra10. And she advised to have opposite tablet to remove lefra10 content from blood. It is necessary to have opposite tablet to clean lefra10 tablet content in blood..? May it give problem in pregnancy?