Ok i did some research on this. On ebay the sellers that are selling these medications are buying them from websites and selling them for minimal profits. Meaning 4-10 per item. Notice how high the shipping charges are. Most of them are getting thier profits from the shipping.
Most of these items only cost around $1.50 - $1.80 to ship first class mail. And you can ship them in a 20 Cent bubble mailer.
Some suppliers are here:
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Remember this is not a high value item as far as profits are concerned.
But if you can sell alot of low value items then your profits can soar.