I wish they wouldn't keep changing the colours or at least have a way of keeping track of what batch you have. I have 2 different sets of yellow tops 36iu. One labeled H36 the other M36. The H36 is fine, 6iu I'm getting pins and needles in my hands. It's the M36 I'm not able to find a conclusive answer if they are the same or not. (At least they're not white cap I guess)