Difference in other suppliers

First I bought in my local online supply, during the first 4 weeks, it was great due to the fact that even for low dose, it worked really well and has the side affects of being cold and all that.

I have now bought from grey market and used a new batch but this particular batch seems weak. From the first batch even 1.5mg I was really weak and had neusea .

But now from my new batch from grey market , I have taken the first time at 1.5mg , felt nothing and no noticeable side effects . After 4 days, I've increased the dosage to 2mg recently, and felt no side effects or being cold/ sensitive skin.

I don't know if it's working properly or not, sure I'm not feeling hunger at the moment but recently I've been having craving on donuts and eat lots of food.

I'm assuming it's because of this new batch that it's not working properly.

First and second batch it's the same 10mg, 2ml bac water.

1-5 weeks first supplier Week 6-7 different supplier

Has anyone tried 2 different suppliers and notice the difference?