I have been taking it for 2 weeks 125 mcg/day. I have felt no change in symptoms weakness in legs in the morning, no energy, unable to stand or walk for more than 15 mins. and muscle cramps. I tested positive for hypothroidism. Love to learn from others on this therapy.
How long does it take for synthroid to show its full effect?
Question posted by logicaldude on 24 March 2013
Last updated on 5 December 2017
3 Answers
smileyhappy
24 March 2013
Hi Logicaldude,
It takes around 6 to 8 weeks before it shows the levels in your blood have changed. You should feel some difference for sure by then. Your Endo will check your levels of your Tsh and will adjust your Synthroid if needed. Your Endo can only do small adjust at a time so you don't get ill so it can take awhile before you feel yourself again. It's just how the Endocrine system works.
Hope you feel better soon!
endlessPred
24 March 2013
Generally about six weeks. Relief starts showing up around four weeks. Then the blood test to determine your level and probably another adjustment. Sometimes more or sometimes less. Your TSH should read between .5 to 3.0 for a normal reading. However, it is not the number as much as you feeling normal again. Most Endo will work with you on this. A GP does not always get it right. So please see the expert if you have not.
When you take your med in the morning, take it half an hour before you eat or drink anything other than a full glass of water. No coffee, tea, juice, etc. until the half hour is up. Then have a meal of whatever you like.
Plenty of information on this site. Welcome to the group. Karen
logicaldude
24 March 2013
Thank you so much Karen. I am seeing an internist with interest in Endocronology. Hope I can have my life back.
endlessPred
24 March 2013
Of course it will be better. Perhaps you will be sharing here in the future. Ha-Ha. Ask again if something comes up. The secret to thyroid is patience and being observant. A good relationship with your doctor helps as well. Take care. Karen
Olddogman
6 Dec 2017
The literature that came with my prescription only said no dairy within 4 hours of taking the drug. Mineral supplements and antacids are also not recommended. No mention of tea,coffee or juice. I am taking levothyroxine.
kaismama
24 March 2013
Your Dr will follow your labs closely and adjust your dosage. It can take a few months to get it just right.
Related topics
synthroid, muscle, cramp, energy
Further information
- Synthroid uses and safety info
- Synthroid prescribing info & package insert (for Health Professionals)
- Side effects of Synthroid (detailed)
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