Hey hun, I found it did increase my BH quite alot and they were quite regular and ouchy and I didn't start taking the RLT until 34 weeks. I then started the acupuncture though and he gave me traditional herbs to take that do the same thing. They do tone the uterus though and I know heaps of people who say that it makes labour shorter. Maybe start off with small amounts of the tea and build up. With Izzy I took tabs and they did nothing, this time I drank the tea and felt BH right away so you could have a half cup of tea and build up. If you find they are too strong and annoying you can always cut back or stop.