What does sweet clover do?

Commercial preparations of sweet clover are available as dried crushed herb, as ointments, and as suppositories.

Coumarin can also cause birth defects and bleeding in the fetus. Therefore, the use of sweet clover should be avoided during pregnancy.

Although sweet clover does not have any identified interactions, prescription drugs containing coumarin have been known to interact adversely with other prescription drugs

Long-term ingestion of high doses of sweet clover can cause headache and stupor. In isolated cases, temporary liver damage can result.

I'd say it is. Repetition is something (an idea, a word, a phrase etc. etc.) which is REPEATED for effect. Here, the word 'sweet' is repeated. It is done for effect. Hank Williams in one of his songs...