The active ingredient is Diphenhydramine HCl, the antihistamine found in Benedryl. So it's great for allergies and knocks you out as promised. However, this 354 mL bottle costs almost $8. You can buy the Equate version of Benedryl (100 tablets) for $4 and you'll get over FOUR TIMES the amount of uses from it. The bottle holds about 24 25mg doses, whereas each tablet of Benedryl is 25mg of the same drug. That's makes liquid Zzzquil eight times more expensive than it needs to be. Granted, there are differences in how quickly it takes effect between liquid and tablet, but nothing a little foresight can't fix.
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