Some supplements sold for erectile dysfunction contain ingredients that are the same or similar to Viagra and Levitra

Some supplements sold for erectile dysfunction contain ingredients that are the same or similar to Viagra and Levitra.

The FDA has found these compounds in Zimaxx, Libidus, Neophase, Nasutra, Vigor-25, Actra-Rx, and 4Everon.

And, of course, they aren't listed on the labels.

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