Sounds like you got fake halotestin. 20mg/day is a sufficient dose.
I would stop using it. Halotestin is the single most toxic compound you can take for your liver. I would limit it's use to MAX 4 weeks. There are much better options. Tbol would offer close to the same strength gains with much less side effects.
Make sure you are using a good quality liver/organ aid before and after using halotestin. n2guard at 7 capsules/day.
Trevor Kouritzin RHN, B.ENG
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