Keep it personal: Everyones needs are different age, activity levels, and diet all play a role
A vial priced far below the market is either underdosed, impure, or stored badly somewhere along the chain, and any of those wipes out the savings the moment your results stall
An increase in hydrophobicity attracts a more significant amount of proteins, influencing the formation of the protein corona and altering their biological interactions
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However, by the time copper and nickel start affecting the taste (or color, in the case of copper) of your water, it's likely your pipes need professional attention
10.3390/pharmaceutics17091190 Pharmaceutics 20 DelgadoJ.TerrnM.GarridoM.ParienteJ.BarrigaC.RodrguezA.et al (2013)