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You can, but its not recommended

Moreover 10 (PNB-0408), a low-molecular weight molecule lacking the N-terminal amino group found in Ang IV analogues enhances cognition and is reported to crosses the blood-brain barrier and subsequently exert its action by interacting with the hepatocyte growth factor/c-Met receptor system

But animal studies extending up to 6 months show no organ toxicity or adverse histological changes (Sikiric et al., Toxicology and Applied Pharmacology, 2019)

So right now it is not approved by the FDA for any human use

Nitrous oxide-induced myeloneuropathy in a Thai adolescent: a case report