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Modern life pulls hard on that supply: Lawn and garden chemicals (herbicides, pesticides, fertilizers) BPAs and microplastics from chew toys, plastic bowls, and water containers Synthetic preservatives and additives in commercial pet food Diets heavy in processed kibble or high-glycemic carbohydrates Tap water contaminants (chlorine, fluoride, heavy metals) Vaccines and routine veterinary biologics Long-term medications Monthly flea-and-tick preventatives and dewormers When daily toxin load outpaces what your dog's body can produce, glutathione stores run lean

Think of it more as a supportive tool, not a cure on its own

Avoiding Synthetic Fillers Check your multivitamin label for "other ingredients." Many mass-market brands use titanium dioxide, artificial colors, and stearic acid

For a deeper understanding of peptide therapy, see our complete guide to peptide therapy