Is it bad to insert adderall into your anus?
1) in general, inserting anything into the anus has some risks and the more often you do it, the more likely you may cause an injury. 2) Adderall is a prescription amphetamine-containing drug; rectal mucosa generally rapidly absorb drugs into the blood stream. "Kiestering" anything not meant as a suppository drug can be dangerous. Adderall is linked to psychotic episodes, so possibly more so. Bad is a judgmental term. It's illegal to insert adderall into your anus; doubly so if you have illegally obtained the drug without a prescription. It's naughty in general to insert anything in your anus, for pleasure or for drug abuse. Naughty isn't always bad...but in this case, the activity should be rethought for safety and health purposes.
You could physically put a tampon in your anus, but you shouldn't. Tampons are supposed to be inserted vaginally, if attempting to insert a tampon for it's intended purposes then you should know where the vaginal opening is located so know not to insert into the anus. You will also be able to feel if you are accidentally inserting the tampon into the anus.
I'm not sure why you would want to insert a tampon into your anus, least of all why you would firstly put toothpaste on the tampon - but potentially it may be bad for health. The toothpaste could sting the mucus membranes in your anus, but the main issue would be that the tampon could dry-out and damage the tissues in your anus - this could cause discomfort, infection, and risk toxic shock syndrome.
No, it's not bad. In fact it may make the adderall more effective. It activates the neuroreceptor sites that are stimulated by amphetamine. So while it's not necessarily bad, your dosage may need adjusting. And furthermore your symptoms requiring the adderall may be better managed with balancing of your hormone levels.