If you consume such supplements, you can find after effects like fishy burps, metallic after taste and practicing.
Bimbos Deluxe on Brunswick street still has pizzas for 4 dollars though, a person can't really go wrong there. Laws are made for a reason, so don't break them. https://www.digitaljournal.com/pr/news/press-advantage/contractors-state-license-center-offers-contractors-license-school-in-san-fernando-valley