Black Insomnia Coffee - Dark Roast Ground - The Strongest Coffee in the World - 1lb (Pack of 6)

In doing research for very strong coffee, Black Insomnia came up consistently at the top (or 2nd) for caffeine content. I have a very high tolerance for caffeine, so I'm not easily impressed. This brand, however, comes through for me. I don't feel a sudden jolt or get shaky, but I can feel my energy level surge and sustain for about 6-7 hours. Those who are sensitive to caffeine may need to go slow on drinking this, but I don't see it as a brand that's going to give you heart palpitations, for example. In addition, I have to say I find it rather smooth instead of bitter or biting. Overall, a good buy and good value.

This is great coffee, smooth and taste good. I've been buying my coffee on Amazon for quite some time now, because it's more affordable than the stores.

Good coffee

Flavor was good but couldn’t tell much of a difference between this product and death wish coffee

The coffee is great. I was just disappointed when the Amazon driver took a picture where he delivered it. It has my address on it. Unit B but it was left outside where the address sign 5803. Never went inside to look where the Unit is. Thts why I had to do 4 star. Taste is good, caffeine good, smooth would recommend if u like strong coffee

I really enjoy the flavor of this coffee. The caffeine content is very high, but not so high as to make me sick at my stomach like another high caffeine brand I tried. I shared it with some friends, it was too much caffeine for one of them. I would recommend only drinking one cup or maybe half a cup and give it 20 minutes to see how it affects you.

I honestly don't notice any higher caffeine effects but it is actually very good tasting coffee. I make cold brew with it and it's very good. I will buy again.

I bought this coffee to see if it would give me a little boost when needed. Man, did it come through.When needed I use this 50/50 with me regular blend so as not to get me over stimulated.