There isn't one specific "best" drink for itchy skin, but staying hydrated is essential for overall skin health. Drinking plenty of water helps keep your skin hydrated from the inside out, which can alleviate dryness and itching. You might find that consuming drinks rich in vitamin C, like orange juice or tomato juice, can help boost collagen production and improve your skin's overall health.
While these drinks might not directly target the itch, maintaining good hydration levels and supporting your skin's health through vitamins can be beneficial. Remember that if you're experiencing persistent or severe itching, it's important to consult a doctor for a proper diagnosis and treatment plan.