I started taking 30mg of phentermine about four months ago. It worked really well until about a month ago. So I went to the dr at the beginning of February and he up it to 37.5mg. Will the up in dosage work or is the body already immune to it?
Phentermine - can your body become immune to phentermine, dr has had to increase my dose?
Question posted by lulu8402 on 3 Feb 2013
Last updated on 19 April 2018
Are you taking it first thing in the morning on an empty stomach. I was taking after breakfast and it stopped working in the second month. I lost 15 pounds the first month and felt great. The second month I was so fatigued and sleepy and i didn't lose any weight. But this morning I took it on an empty stomach and waited an hour before coffee and it seems to be working again, I can actually feel it. Thought maybe that was your issue as well.
Hello lulu8402. No, not according to the chemical make up of the drug. Phentermine is perscribed to work for a very short period of time. Two to three weeks. The longer taking the drug, the less effective it is. And the very likelyhood and common side effects in doing so are can be serious. Cardiac/blood pressure issues are two. Regards pledge
- Phentermine uses and safety info
- Phentermine information for Healthcare Professionals (includes dosage details)
- Side effects of Phentermine (detailed)
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