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Lin et al., 2020), and injection of bioactive drugs (Li et al., 2018

Beware any source that claims to sell or offer FDA-approved glutathione or to sell or carry out the procedure without a valid prescription or medical consultation

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The multifaceted mechanism of action of 5FU involves direct incorporation of its metabolites into DNA (FdUTP) and RNA (FUTP), as well as inhibition of thymidylate synthase (TS) via FdUMP 4,5 , making it more difficult to identify rational combination partners that would enhance clinical responses without eliciting adverse systemic toxicity

doi: 10.3390/toxins10060214