• It's that time again! "Mad Money" host Jim Cramer rings the lightning round bell, which means he's giving his answers to callers' stock questions at rapid speed.

Cassava Sciences: "If they can have something big, that stock triples. If they don't, I think it drifts down. I like that risk/reward, but understand it's speculative."

Lantheus Holdings: "I think it's great..Lantheus is terrific."

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