Product testimonials are very reliable

That would be False

People who make the product testimonials can easily paid by company to lie.

If you want to get a reliable recommendation, find the products that meet the criteria of a standardized regulation like the one already made by the Foods And Drugs Administration

This statement is most likely true. While some product testimonials tend indeed to be true, it is very likely that they are false product testimonials because companies are eager to pay for positive information about themselves to be written. The product testimonials don't necessarily have to fake, but they sure are very likey to be biased.