Caffeine Effects: Withdrawal, Sleep & Health Impact

Caffeine impacts everything from sleep quality to concentration and heart rate. Learn how long withdrawal takes, the diuretic effects on the body, and the potential risks of taking caffeine tablets with medication or alcohol.

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Can B-12 Make You Feel Jittery?

B-12, also called cobalamin, is a water-soluble vitamin essential for the production of red blood cells. Although B-12 occurs naturally in some foods, if you have a deficiency, you may need to take B-12 supplements. Taking B-12 can have some side effects, but making you feel jittery is not a common one.

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