Anyone notice "less" of a buzz when you have a sugar-free caffeinated beverage, versus the alternative?

I have been trying to remove refined sugar from my diet, but in the process I notice–unfortunately–less of a kick from my normal caffeine intake when taken without sugar.

Apart from caffeine and sugar combining to increase blood sugar, is there another kind of synergy at work that makes for the "more potent" effect when taken together?
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(One person I know, who’s knowledgeable in this area, says that taking caffeine without sugar is "almost pointless" because caffeine "has to utilize brain sugars anyway.")

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I drink black coffee to wake me up in the morning, but it aggravates my acid reflux and I’m also sensitive to caffeine. I only started this to be like my friends in 9′th grade (UGH!). I’m in high school and still have to go to sports practices, so I need the least amount of side effects possible.

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I want to be able to make just a simple-low calorie latte or any coffee and/or tea drink that doesn’t require a ton of ingredients I probably don’t have. Anyone have any recipes??

I accidentally had tea with caffeine this evening, and I am very sensitive to caffeine; so, what can I take so I can fall asleep to night?
Well, I had two cup of warm milk and sleep though the night just fine. Thank you

Starbucks reported it was raising the cost of packaged coffee beans and local roasters could soon follow suit.

Thankyou!