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Doctor insights on: How Long To Wait To Eat After Taking Levothyroxine

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How long should I wait after taking levothyroxine 25 mg to take milk or take my iron pills?

How long should I wait after taking levothyroxine 25 mg to take milk or take my iron pills?

Levothyroxine: The easiest way would be to take your levothyroxine at bed-time one hour after your last meal or snack. If not you should take your tablet one hour before breakfast. ...Read more

Dr. David Sneid
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Thyroxine (Definition)

Thyroxine is a thyroid ...Read more


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How long after eating does someone have to wait before taking levothyroxine. In other words, what's the definition of an empty stomach?

How long after eating does someone have to wait before taking levothyroxine.  In other words, what's the definition of an empty stomach?

No soy no iron: Although the packaging for levothyroxine says to take it on an empty stomach for many people its not possible to do that and take it consistently each day. As long as you take it at a consistent time and don't take it with soy or with iron which will interfere with its absorption it is fine to take it with breakfast or before bed without being strictly fasting. Just get labs checked after change. ...Read more

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Do i take levothyroxine first thing am? How long do I need to wait to take Effexor (venlafaxine) XR (150mg) and clonazepam (.5mg) before i leave for work? Thx :)

Do i take levothyroxine first thing am? How long do I need to wait to take Effexor (venlafaxine) XR (150mg) and clonazepam (.5mg) before i leave for work? Thx :)

Yes....: ...The levothyroxine ( synthroid) is supposed to be taken on an empty stomach about 30 to 60 minutes before eating breakfast. Ideally you would take the Effexor (venlafaxine) xr with breakfast and the Clonazepam could be with breakfast as well if you take it on a regular basis. But if you are still feeling so tired, make sure you are getting your blood checked regularly, see your dr to discuss all factors. ...Read more

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Are there any effects of prolonged taking of levothyroxine (after five or more years)?

Thyroid Treatment: Nope. This is a drug you will take for the rest of your life. It is as close to being on the real thing as there is in medicine. ...Read more

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Is propantheline tablets ok to take long term , & also to whilst taking Levothyroxine ?

Is propantheline tablets ok to take long term , & also to whilst taking Levothyroxine ?

I didn't know: anyone was still taking this out-moded anticholinergic medication. Why are you taking it. It's ok to take with levothyroxine, but brand name levothyroxine is better and more reliable than generic. ...Read more

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How long does it take for levothyroxine to start working?

How long does it take for levothyroxine to start working?

Takes its time. : The full effect of levothyroxine is not immediate. When we start the medication anew or change its dose, we usually have to wait at least three weeks to perform blood tests to see its full effect. So it does take its time. ...Read more

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How long for a lower dose of levothyroxine to take effect?

How long for a lower dose of levothyroxine to take effect?

Levothyroxine: If your current dose of levothyroxine is causing you to have a high thyroid level and getting symptoms I suggest you stop for a day or two and then re-start with half the original dose. To be sure you should have your doctor check your thyroid levels every three to six months. ...Read more

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After Levothyroxine is taken how long does it take to kick in?

After Levothyroxine is taken how long does it take to kick in?

Depends: Hi. Levothyroxine (T4) takes about 5-6 weeks to get to equilibrium state in your blood. Biological effects may be felt sooner than that, of course, but in terms of lab testing after starting or changing a dose, you need to wait about 6 weeks to test when the dose is at equilibrium in the blood. T4 works by regulating gene expression; DNA to RNA to protein and the proteins affect tissue function ...Read more

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How long will it take for Levothyroxine 0.075mg to start and I see a change?

Levothyroxine: The list of "conditions" you report is very important. The irregular periods needs to be resolved by your doctor. Attention deficit disorder, and fetal alcohol syndrome is an indication that you should see a Psychologist. That will put you on the path to marked recovery from your current issues. Please keep me informed. ...Read more

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Can I take a BCAA supplement shortly after taking my Levothyroxine or do I have to wait the 45-60 minutes? Thanks

Wait: Should wait 1 hour after taking L-thyroxine before eating or taking other medication to allow for full absorption. ...Read more

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How long before I have energy for physical activities again after starting levothyroxine?

How long before I have energy for physical activities again after starting levothyroxine?

Be careful.: You must be very careful with this drug, as it can cause heart failure and other things if given in too large a dose. Overdose can show effects as long as 6 - 11 days aftter ingestion, so you really should take it easy until your thyroid level in in the normal range and stays there. Your doctor will want to see you often for level checks and dose adjustment, so talk to him/her for the best time. ...Read more

Levothyroxine (Definition)

Of the hormone produced by one's own ...Read more