We don’t have sample sizes of the Drops or Drops Plus. It is very difficult for one to see the results of the internal tinctures like Drops with a very small sample. We find it generally takes up to two weeks to see whether the dose you are taking gives you the results you are looking for, and even then you may need to increase the dosage to find the amount you personally need. We made a conscious decision to price our highest quality products well below the market in order for more people to be able to experience this wonderful product.