Last-Minute Under-$25 October Prime Day Deals to Shop ASAP

Natural Vitality Calm Magnesium Citrate Supplement ($23, originally $41)

Magnesium can help you unwind for the day so you feel calm and ready for rest. If you need help with managing stress or tension relief, now's your chance to stock up, especially when it's 40 percent off. Just mix it with water and sip while you're getting ready for bed. It comes in a bunch of different flavors, and it's vegan and gluten-free.