We have used both the Spearmint and the Peppermint extracts since Saturday – and it has given us positive results for muscle pain, as well as a severe headache. The cost of the extracts, along with the results, was SMALL CHANGE compared to the cost and side effects of what we have been using. Of course, I would hasten to add, that these are not supplanting regular meds, just supplementing in a more natural way. Keep up the Great Work!