ugh mussels... they put me under for about a week too, every time, strictly avoid them. ... mussels are water filters (pretty much the same as eating the the activated charcoal in your used water filter) Crab is a bottom feeder, eats the dead stuff sitting arround. Not all dead stuff was healthy when it died, keep it in mind. Quite likely your runs are from the mussels.

However chlorella can do it a bit too if you eat a lot of it. i would simply use less, half or a third your current dose, and take a couple days off each week.

The sugar is a problem, and I would never drink aspartame tainted diet drinks... but sipping Coca Cola may help cure a slight bug if any iof the mussels were a bit sick. Sip slowly, you only need a little bit. The phosphoric acid is lethal to lots of bacteria.