I had similar reactions and strong detox reactions with my first hypertonic intake.I drank it 30-40ml in the morning, and had, what I think, is some (quite a bit of) detox reactions.
What really helps me in addition to Marine plasma to move out toxins is a specific healing clay. It can applied externally for a variety of symptoms. I drink it in water before bedtime. For me it works wonders ( also for the gut!) and soothes most reactions overnight.
Maybe others want to try it too:
It is called AION A. It was found in 1942 in Switzerland and since then a healing and research center was build around it.
(also in French )