The best way to plug anything is to cook it first as if you were going to inject it through your veins. This gets out any impurities that it may have been cut with. Then just use a medicine syringe that they use for giving infants liquid medicines. Any pharmacy will give one to you free. Then fill the syringe and off you go. Also everyone gets different results from various ways of doing drugs. Your tolerance levels, your metabolism etc.. Weight or the size of the person is not really a factor. I have a buddy who is 6'3" 220 lbs. and doing one 50mg trazodone knocks him on his ass. I'm 5'9" and 160lbs. and I had to prove to him and my wife that it didn't do shit for me. I did 6 of them which was 250mg and no effect what so ever. If I am on a medication after about a month of being on it, It won't matter how much I take, bump, snort it will not work. My problem is I have been on meds since 1994 when I was disabled in a car accident and every doctor I have seen doesn't and never believes me when I tell them I have grown tolerant to the med. I was just on Seroquil for sleep. 250mg. I went to the doctors and I told the nurse that it doesn't work at all anymore and she said that it was impossible to grow tolerant to Seroquil. I sat there one night and did 10 15mg MSIR (morphine sulfate immediate release) at once. It didn't even help my tooth ache. My wife was flipping out thinking I was going to drop dead or something. But, then was shocked that I didn't show even a sign of being on a pain killer.