Triphala vs Senna?

Hello, I'm a newbie on day 3/10 of my first fast. I had a traumatic experience with the dieter's tea in the past and so I'm reluctant to put myself through that again. Instead, I've been using triphala tea which I was using before I started Master-Cleanse and it does provide, er, morning activity, even without SWF (Salt-Water-Flush) (been getting up too late for work for SWF.) Is this OK, or am I missing something crucial by not using senna? Any tips to make the senna not as bad? I'm going to make more effort to do the SWF (Salt-Water-Flush) in the morning.

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