[Secret Agent Man]

Not all multivitamins are created equal.

[crusher2013]

Especially the ones made in China. Quality control is often very poor.

[Cold Heart]

78% of vitamins imported into the US are from China

[Rockingham]

Quite true. Some poor quality multivitamins include artificial vitamins that are in forms or contain compounds that have anti-vitamin effects, while minerals may be in forms that are poorly absorbed.

My benchmark test is to check the label to see if the Vitamin E is solely in natural form with mixed tocotrienols and tocopherols, and with the magnesium being amino acid chelated (magnesium taurate, glycinate, or L-threonate). As a practical matter, look to buy the most expensive brands, not the cheapest.