Aa
A
A
Close
Avatar universal
phentermine and levothyroxine
I will start taking phentermine 15, very low dose, tomorrow, (must loose 40 pounds at a rate of 2 pounds/week), but I've been taking Levothyroxine 112 for hypothyroidism for many years first thing in the morning, and only have breakfast 30 to 45 mins after I take the thyroid med.  The PA told me to take the phentermine before anything in the morning.  What should I do?  I don't want the two drugs to interfere with each other.  What do you suggest?

Thank you.
Cancel
1 Answers
Page 1 of 1
1756321 tn?1499064984
An option is to take levothyroxine before you go to bed.  Several studies have found that taking the same dose of levothyroxine at bedtime, compared to first thing in the morning, may be better. Researchers have suggested several explanations for these results: despite waiting 30 minutes breakfast may be interfering with the intestinal absorption of levothyroxine; bowel motility is slower at night which can result in better uptake of levothyroxine; T4 to T3 conversion may be more effective in the evening.
Comment
Cancel
Comment
Avatar universal
Comment
Comment
Comment
Post Comment
Your Answer
Avatar universal
Answer
Do you know how to answer? Tap here to leave your answer...
Answer
Answer
Post Answer
A
A
Doctor Ratings & Reviews
Comprehensive info on 720K doctors.
Complete reviews, ratings & more.
Thyroid Disorders Community Resources
Top Thyroid Answerers
649848 tn?1484935765
Blank
FL
Avatar universal
Blank
MI
1756321 tn?1499064984
Blank
Queensland, Australia
Avatar universal
Blank
657231 tn?1453836403
Blank
Northern, NJ