its not that its not safe, its a matter of effectiveness... when your watching the video, you will hear me say that i am simply stating what THEY (the producers of the product) claim its capable of... personally, if i am giving my thoughts on it, its a major waste of your time and money... you can use it and the suppression is quite minimal... its a non methylated half ass oral, but understand, its not very strong and can still have toxicity, even though its non methylated.. it would not make any sense to use... you would be far better off stacking s4 with them if your looking to add something but you can run it with them if your wanting to...