This is an excellent product! My partner uses them every night and wakes up feeling refreshed every single morning. Without them he finds it difficult to get out of bed, feels physically and mentally awful and struggles to function. This is due to his work shifts which make our sleep schedule unusual and most certainly effects his circadian rhythm. This product is fantastic value for money with 180 tablets. My partner takes two every night so we get three months worth in every bottle. That's roughly $3.50 per month which saves us $60 a month here in New Zealand. In a country that charges $63 a month for only thirty tablets we would be crazy not to keep purchasing our melatonin through evitamins. We have tried melatonin through other online vitamins companies but have found this particular brand and product to be the best so far. We highly recommend this product for anyone else out there needing a boost in their Melatonin!