In an interview with Billy Bush on the TV show Access Hollywood, to be screened on May 26, Cruise speaks of his disappointment to learn Shields used Paxil to fight post-natal depression following the birth of her daughter Rowan.
Shields is currently weaning herself off her medication so she and husband Chris Henchy can have another child.
Cruise, who claims to have helped people fight drug addictions through his controversial Scientology religion, says the Suddenly Susan actress should have used vitamins to help her feelings of despair.
Cruise maintains, "These drugs are dangerous. I have actually helped people come off.
"When you talk about postpartum, you can take people today, women, and what you do is you use vitamins. There is a hormonal thing that is going on, scientifically, you can prove that. But when you talk about emotional, chemical imbalances in people, there is no science behind that.
"You can use vitamins to help a woman through those things."
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