nepenthe

n. legendary drug that caused one to forget his troubles or sorrow; anything which induces a soothing sense of forgetfulness (of pain or troubles)

Nepenthe is a drug of forgetfulness mentioned in Greek mythology, depicted as originating in Egypt.The word "Nepenthe" first appears in the fourth book (vv. 220-221) of the Odyssey of Homer. Literally, it means "the one that chases away sorrow" (ne = not, penthos = grief, sorrow). In the Odyssey, "Nepenthes pharmakon" (i.e. a philter that chases away sorrow) is a magical potion given to Helen by an Egyptian queen. It quells all sorrows with forgetfulness.
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(n.)
A drug used by the ancients to give relief from pain and sorrow; -- by some supposed to have been opium or hasheesh. Hence, anything soothing and comforting.
  

A potion which causes one to forget their troubles

n.
غم غلط بوٹي