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Can a Phentermine 35.7mg tab be taken at 12 a.m. and again at 9 a.m. without any harmful effects?

Phentermine (Adipex) is recommended to be taken once daily, in the morning. 12 a.m. is midnight, taking a second dose in 9 hours would be inappropriate. If indeed you took a tablet at midnight, I would suggest waiting until the following day to take the next. If you have any questions, talk to your physician that ordered this medication.

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