The Difference Between Single- and Double-Malt Scotch. To understand the difference between a single-malt scotch and a double-malt scotch, some whiskey terms must be explained. However, the simple explanation is that a single-malt scotch comes from only one distillery and often refers to scotch that comes from one batch.
Ecstasy is a water soluble drug. Which meens it can stay in your system through urine and blood for anywhere up to 2-4 days. Depending on the water level in your system. Howev â¦ er through a hair strand test ecstasy is still shown up to 6 months. Cocaine and MDMA both stay in the system for about 3 to 7 days.   If you are referring to the effects, you would start to feel the cocaine shortly after ingesting the pill, and as you are coming down from the cocaine, you would likely begin to feel the MDMA. 1 person found this useful. Answered.
It is the length of time it takes for half of the amount of medication taken to leave the body. This is a good estimate for determining how long opiate pain medications stay in your system. Morphine has a half-life of two hours, the shortest for any opiate medication. The longest is mepredrine at three to four hours. After the half-life is reached, the drug will still stay in your system up to three days, but at far less concentrated levels. People taking these medications usually feel the effectiveness begin to wear off soon after the half-life is reached.