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The Cosmetic Ingredient Review panel's safety assessment of benzyl alcohol confirmed that the compound is safe at controlled concentrations but flagged that dose precision matters the margin between effective preservative and tissue irritant is concentration-dependent
PubMed 22962027 TB-4 Phase 1 human safety first-in-human randomized, double-blind, single- and multiple-dose Phase 1 of recombinant human thymosin 4 in healthy volunteers, no serious adverse events: PubMed 34346165
Some users report less nausea when they take their dose in the evening rather than morning, allowing sleep to occur during the period of peak medication effect
Category 1 Adequately nominated, potentially eligible, and not identified in another category FDA generally states it does not intend to take action when all conditions in its interim policy are satisfied Category 2 Adequately nominated, but FDA identified potential significant safety risks Not covered by the Category 1 enforcement-discretion policy Category 3 Nominated without enough supporting information for FDA to evaluate Not covered by the Category 1 enforcement-discretion policy Two cautions matter: First, Category 1 is not the same as FDA approval
Mohapatra, Applied Nanoscience (Switzerland) 7, (2017) 843850