No. Any impurities in your body can or will leave your body through your urine or feces. By returning your urine into your body your are returning the impurities back into yourself. Thus your are re-contaminating your body. To properly cleanse yourself, I suggest drinking water.
Urine is yellow in color, meaning that it is very nutritious to drink. If you are not urinating often enough, try drinking your urine. It will cleanse your body and help to regulate your urinary patterns.
Vyvanse show up in both urine and blood tests as an amphetamine.
Vyvanse will show up as an amphetamine in both urine and drug testing.
No, it not nearly acidic enough.
It will show up as Amphetamine (whether legal: adderall, dexedrine, and vyvanse, or illegal: speed). Unfortunately they can not tell which you took, all it is to them is "AMPHETAMINE". SO unless you have a valid prescription you should be fine (not in all cases).
No, urine or blood cannot be used to activate Vyvanse for a high. Vyvanse (lisdexamfetamine) is a prodrug, meaning it must be metabolized in the body to become active. It is designed to be taken orally and converted into its active form through the digestive process. Attempting to use urine or blood in this manner is ineffective and dangerous.
Usually no more then a week, but to be completely sure I would say 2 weeks.
Yes, both through blood and urine testing.
You are either not drinking enough liquids, or you are taking vitamins without food and peeing them all out.
Yes, a cleanse can change urine color. Many cleanses involve dietary changes or the intake of specific herbs and supplements that can affect urine pigmentation. For example, consuming beets can turn urine pink or red, while certain vitamins, like B vitamins, can give urine a bright yellow hue. Additionally, increased hydration during a cleanse may dilute urine, affecting its color as well.
Vinegar can help clean out your urine due to it's detoxifying properties. Another great way to cleanse your body is by hydrating yourself with water to help speed up the detoxifying process.