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This is a nice caution to post for those who wish to conceive. As Oberon points out, this does not mean these are effective contraceptives. The test setup of placing the live sperm in a beaker of 10% lubricant in sterile water makes the spermicidal effect appear greater than it is. That is valid for what they were testing but not valid for testing as a spermicide.
Couples in fertility treatment may be given special lubricants or even preparatory douches to adjust the acidity of the vagina. Those products are designed to enhance conception.
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Brandye
Don't wear cheap bras!
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