Sucralose

I wanted to tell you that when i started using a lot of sucralose liquid I experienced fatigue and weak muscles. I stopped using it and feel strong as before and more energetic again. The difference is remarkable. Sucralose are suppose to be ok for the body, but why is it then a limit for how many mg you can take? If sucralose kills 50% of the good bacterias in the intestines of rats, why would it not kill ours? If i lose weight in the nearest future it is because i am more active. I feel strong enough to start strength training again. My weight has been around 50 kilos for months now and I have had my period several months.