This is not a new question but has a long history. Here, just a few remarks.

Vitamin E is often sold as alpha-tocopherol.,which is just one of the parts of vitamin E

In fact, natural vitamin E has-as is known today-contains 4 components: alpha, beta ganna and delta tocopherol [after the Corona everyone is familiar with the greek alephbet….]

It has been shown that a high dose of a-tocopherol [400 mg] increases the chance of prostate cancer, but only 50 mg may be protective.

So preferable use the mixed tocopherols, if any and stay at a lower dose [except for some exceptional medical conditions]

Example: Solgar, Naturally Sourced Vitamin E, 67 mg (100 IU), 100 Softgels