hi polish***** thanks for your query Use of cocaine should be stopped by a woman before she conceive and in your case your friend is taking cocaine even she is 6 months pregnant, cocaine is a stimulant drug and use of cocaine during pregnancy may lead to teratogenic effects to a new born, premature birth, still birth etc. But best thing in such situation is to stop using cocaine in 7th to 9th month of pregnancy as we have to minimize the harmful effects in baby. Its very easy to ask some one to stop using cocaine but its very difficult to stop. What you can do is- 1) reassure her than she has to quit for the sake of baby. 2) provide warm support to her. 3) tea/coffee will help 4) gradually taper the amount of cocaine use over a month to zero amount at 4 weeks 5) consult a psychiatrist if severe withdrawal occur (although rare) 6) maximum chances of risk of cocaine use in a pregnant are in 1st and 3rd trimester. She has passed 1st trimester and now you can help by preventing the cocaine use in 3rd trimester. so with strong will and support she can quit. :) all the best thanks and kindly rate.