Unfortunately, going to a pharmacy as opposed to a grocery store isn't enough to ensure that you will get something actually helpful. CVS, Walgreens, and Rite Aid all have plenty of homeopathic offerings.
Worse, the labeling as homeopathic is often not very prominent, and these products are shelved with the non-homeopathic products that treat the same thing the homeopathic ones purport to treat. It is easy to not realize you have picked a homeopathic product if you are in a hurry, or if whatever you are there to get help for has left you kind of zonked out.