The warning comes after nine drug peddlers were arrested in the Ashanti Region for selling unregistered drugs.
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The FDA has begun clamping down on fake drugs after it has been repeatedly accused of sleeping on it mandate.
It was recently accused of allowing plastic rice into the market.
Ashanti Regional FDA Principal Regulatory Officer, Nora Nakie Tei Larbi, says most of the buttocks, penis and breast enlargement drugs are not registered.
She further said the drugs are labeled in languages that are difficult to read and understand.
Many of the enlargement drugs come in the form pills and creams.
But Mrs Larbi says the enlargement can be done through surgery.
She also warned that the drugs are not healthy for consumption, urging the public to say away from them.