Somulin.com has a rating of 4.0 stars from 1 review, indicating that most customers are generally satisfied with their purchases. Somulin.com ranks 300th among Vitamins & Supplements sites.
Like any other product the body will adjust and therefore the product will become less potent. The best way to deal with sleep issues is to very what's used. Somulin is an effective product, but any product has to be cycled with other products to stay potent.