Drug use is within your rights, but is it worth it?
Recently while talking to a person, they told me that they have a right to put any mind-altering chemical (called "drugs" by the state) into their body that they want. I quickly agreed, but made a point they seem to be missing. My advice would be the same to anyone in this position.
I also have an absolute human right to carry, openly or concealed, any gun I own everywhere I go, but it isn't always the wisest action because of counterfeit "laws" and overzealous LEOs (Liberty Eradication Operatives). So, while I agree that you have a fundamental human right to use any "drug" you wish, as long as you are not attacking people to get it or harming anyone while under its influence, I also want for you to understand that it may not be in your best interest to do so, even ignoring any health consequences.
There are unjust consequences you need to be aware of. It may prevent you from getting the job you want. While you would be wise to refuse to work for any company that perversely wants your urine, as long as government encourages such sexual molestation, it will probably continue. Employers have a right to refuse to hire anyone for any reason. Even stupid reasons. Also remember that LEOs will use the excuse of thinking you may have "drugs" in your possession to storm your house at 3AM, shoot your dogs, stomp your kittens, and electrically torture your spouse and children before kidnapping or murdering you. Avoiding "drugs" does not assure your safety from badged thugs, but it doesn't hurt either. However, it is your choice and I will not cast stones regardless of your decision.
I can't tell you what to do, nor should I. Nor should the state. "Right" doesn't always mean "smart". Weigh the costs, benefits, and possible consequences of anything you do. Then make an informed decision. Whether it is "illegal" or not.