Bad reaction to these fish oil pills

I have been on Walmart brand fish oil pills for a while. These looked better and I start taking these a few months ago. Painful pimples on the back of my head started coming up like mad so I changed my diet and stopped these pills and they eventually went away. With new diet in place, I started these again and pimples returned. It may not be an issue with the product but my own biology reacting to something in the ingredients but I have an almost full bottle I won't be using again!

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