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Alteril Warnings: Internet Sleep Aid Scam Alteril (Somnia Lateril) an apparently natural OTC sleep aid is marketed on television and on the internet with infomercials.Supposedly containing L-tryptophan, Alteril also induces sleep with Melatonin; dangerous! Dozens of reports call Alteril a scam. Alteril has dangerous reported side effects. Caveat Emptor!Read more