@HBamama2B has mentioned using it for the first 1/2 of your cycle (up to implantation). I have not tried it but I will definitely add it to the grocery list for the future!
If you don't like the tea, the pill is a good option, just check to make sure the concentration isn't significantly higher than you would get from 1-2 cups of tea. If you do drink the tea, make sure to steep for 5-7 minutes and not to have more than 2 cups.
Re: Red Raspberry Leaf