These are great and so much less expensive.
Guaifensin in pure form has been a miracle remedy for my Fibromyalga pain. It was recommended by several doctors and the price is 10% of the prescription costs for the same item.
Bunko. Didn't work. Wife flushed them down the toiled after a month. What a waste of two bottles.
Inexpensive and works great!
Didn't realize I bought the 4 hr pills but they work well