Meth slamming / IV help ?

[Grizz0629]

Clean over 4 yr. Decided it was time. First bag prolly close to ball maybe 2 or 2 5. Held me over 2 weeks. 3rd through 8th bad sucked but still some buzz. Next one felt like pure iso shots. No rush, bad jitters, gagging, thick compared to amount of water mixed with product, would cause blood to clot point almost on immediate register. Next two batches after that had some rush but one made me feel one way and another for the other. One batch did about a .15 shot and got some rush, then slight jitters, then became very sleepy. So what's up with this stuff is it just heavily cut or wha