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Table 3 Integral toxicity index of active pure principles before and after exposure to 90 h of simulated sunlight

From: Photostability and toxicity of finasteride, diclofenac and naproxen under simulating sunlight exposure: evaluation of the toxicity trend and of the packaging photoprotection

Active principle Photodegradation time (h) ΔI0 ΔI It = ΔI/ΔI0
Finasteride 0 3.26 ± 0.02 1.65 ± 0.02 0.51
90 3.46 ± 0.04 1.35 ± 0.03 0.39
Diclofenac 0 3.45 ± 0.02 2.66 ± 0.01 0.77
90 4.77 ± 0.02 2.25 ± 0.02 0.47
Naproxen 0 3.06 ± 0.01 2.35 ± 0.02 0.77
  90 4.06 ± 0.03 0.55 ± 0.01 0.14
  1. Values comes from at least 3 tests.