These work the best with Chest, Arms & Legs for me. Muscles really pop during and after the workout. The pump I got was crazy and I really recommend these for anyone chasing the best pump you'll ever get. Arms are the best to get a pump with these capsules and you can feel the difference during and after the workout! *I took 4 capsules 60 - 90 minutes before I'm working out and on an empty stomach for best results*
Goes Well With:
Pre workout so you can can not only chase the pump but HUNT it!

Absolutely zero effect, don’t know how it can be sold as a product. You’d get more pump off the wind.
Goes Well With:
The bin

Makes a big difference during a workout. Helps me get going faster and also helps me in that last set when you need a final push. Taken with BCAA 2.1.1. And methoxyisoflavone.
Goes Well With:
BCAA 2.1.1.  Methoxy isoflavone

Used this product many times mix it with a scoop of pre workout takes my training to another level especially when I’m training at 5am 
Goes Well With:
Pre workout and amino acids 

This product is amazing, I've taken it before workout ,brilliant ,taken it right after a workout and sounds crazy but it made me look more pumped two hours later
Goes Well With:
Anything

I take it with my coffee 1 hr before gym and 1/2 hr before pre . knock out a good session and look jacked for hours after . i see real definition through out the day . highly recommend this product . 
Goes Well With:
pre workout 

Huge fan of myprotein, used and tested plenty of products however this one hasn’t hit the mark and won’t be using again. No difference during training or after training conpared to not taking it, certainly suggest a healthy/safe pre workout as an alternative.

I took these when I woke up on an empty stomach before a bowl of Muesli and preworkout about 70 minutes before workout. During my workout I didn't really feel anything different (Back and Biceps) or have any marked increase in performance, afterwards however when changing I definately felt a slightly stronger post workout pump in the changing room, and the pump has stuck around. What normally wears away after 15 minutes, my back and arms were still feeling really pumped/swole an full of blood 3 hours after I finished, so pretty good!
Goes Well With:
Preworkout, BCAA's intra workout.

I have used it only 3 times: once doing weights, and 2 x times road cycling very intensely an hour each time. Each time the dosage was as recommended i.e. 4 capsules an hour before the workout. While lifting I think I didn't feel anything unusual, no pump, no increased strength or endurance. On the bike though I did experience increased energy, not necessarily endurance as after an hour I was knackered, but my normalized power was about 50 Watts higher than usual. Maybe the taking coincided with my higher form on those days. It happens at times. This thing doesn't shake you up the way, say, Nox by Dorian Yates either. I didn't experience increased heart rate, sweating, hyperactivity, dehydration etc. As such it is pretty mild as I am normally very sensitive to such supplements and get to feel any effects stronger than other people. Which may likely as well be seen as being an advantage. I may buy this supplement again, but am a little on the fence if I really need it.
Goes Well With:
Water, tea, coffee. Best on an empty stomach.

Used this product for a while now also few lads in gym have started using this with pre workout