Beetroot and Nitrates Supplements

Hello,

Studies show that to achieve a noticeable effect, it is necessary to consume between 400–500 mg of nitrates before training.

I would like to know whether this product is equivalent to 400 mg of nitrates, or if the nitrate content in this product is too low.

Nitrates+ — Improve Your Endurance Training With Nitrates

I would also like to know whether caffeine can be taken together with nitrates.