User's Manual: Sleep

12 Surprising Sources of Caffeine

These 12 sources of caffeine, some hidden, some just plain weird, could be giving you the jitters.
sunflower-seeds

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SumSeeds Energized Sunflower Seeds

Marketed as a healthier alternative to energy drinks, these seeds are infused with caffeine, plus natural energy boosters taurine, lysine, and ginseng. Sunflower seeds are a vitamin powerhouse, packed with folate, B6, and vitamin E, and they don’t contain the added sugar of sodas or energy drinks. But one serving of energized seeds has 140 milligrams of caffeine, about the same as four cans of Coke.

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