Cramer's lightning round: Investors are worried about CVS's Aetna acquisition

• 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.

Aimmune Therapeutics: "I think we're late to the party. Now that said, it's down 3 today. If you want to get involved, at least you had to buy yesterday when they got the news, but I think we are late."

1-800-Flowers.com: "I think it's a good solid franchise. I'm not saying it's going to shoot the lights out. I think it's fine."

Cel-Sci Corp.: "Look, we are a big believer in immunotherapy now that we have gene-sequencing, and that's part of the speculative box that we are in favor of."

CVS Health: "The real issue here is Aetna's expensive and a lot of people are fleeing these health care stocks again because they're very worried about single-payer and the Democratic Party and the Aetna acquisition, whether it's too big, too much. And I have to tell you, it's an issue, but my charitable trust owns it."

Teladoc Health: "Dave, I'm a believer in Teladoc."

Virgin Galactic: "It got cut in two-thirds and now [it's] coming back up. I think you wait for another time for it to go down and then you do it over, or you say ... that rocket has gone."

Abbvie: "I think it's going to be a good quarter."

Lockheed Martin: "Lockheed Martin I think is excellent."

Disclosure: Cramer's charitable trust owns shares of Abbvie and CVS Health.

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