Originally Answered: Red Raspberry Leaf Tincture?
I use Thomas Red Raspberry Leaves Syrup which I am assuming would be a weaker solution than a tincture. The directions on my bottle say 1 to 2 teaspoons per 20 pounds daily. I breed small Yorkies. I first learned about it because my daugther is a midwife and uses it in humans. In over 20 years I have never had a C-section and only 1 puppy that died shortly after birth. I have never had it cause premature labor. I have heard that if you use it before pregnancy or during the first week it could cause failure of attachment to the uterine wall since it strengthens these muscles. I begin using it about 3 or 4 weeks before delivery.
Edit: I will also add I have never had any problems with milk production and my females recover very quickly and do not have any coat loss. Labors are 2 hours or less from the first contraction to the last (3 puppies) and my females are also 4 pounds.
My bottle doesn't show any mg. information. I did some research and only found one entry for using the tincture that included a dosage, but doesn't state how many mg. it contains. Here is the info. I found, from a pet site selling the extract sounds like 1 drop would be more than sufficient and may even be too strong.
Red Raspberry Extract 2 oz.(Reference #722G)
Used as a basic herbal formula for all female organs - Strengthens the uterine walls & entire female reproductive system. Tones before & after whelping - Will increase milk production and flow - Assists labor, generally making labor pains milder, delivery easier & will help lessen after pains. Should be used throughout the entire gestation period and into the whelping period.
Normal dosage 3 drops per 50 lbs of body weight once daily.