Doctors give trusted answers on uses, effects, side-effects, and cautions: Dr. Ali on going off amiodarone: If you have been recommended to stop amiodarone, there is no need for a wean or for a taper. You can stop the drug suddenly. It has a very long half-life, so will be in your system even months after you stop taking the pills. Along with its needed effects, levothyroxine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. Although not all of these side effects may occur, if they do occur they may need medical attention. Just a quick post (for those of you with hypothyroidism) of the possible side effects of not taking your thyroid medication. I take 150mg of levothyroxine every day and I know that if I even miss. I didn't go off mine when they found a mass on left side of thyroid. They did an ultrasound, then a biopsy. It ended up being Non Hodgkin's no Lymphoma, the very aggressive type. Make sure you keep close eye on it, and don't drag your feet. I didn't take it as seriously as I should have, it spread to my face, neck, and head. Pray that you will get this taken care of. Side Effects of Quitting Flomax. Flomax (tamsulosin hydrochloride) is an oral medication for treating symptoms of benign prostatic hyperplasia (BPH), also known as an enlarged prostate. It is taken once daily, and is available in 0.4 mg or 0.8 mg tablets. Flomax commonly causes a drop in blood pressure upon standing, dizziness and headaches. Re: Levothyroxine stopping it - does it have major side effects? How do you know if you have adrenal dysfunction? On October 18, I was started on 25mcg of levothrroxine, and I cannot tolerate what the drug is doing to me, so I've decided to go off it until I can meet with an endocrinologist on Nov. 21. Side effects of a dose of levothyroxine that is too low would be similar to the symptoms of hypothyroidism. Symptoms of hypothyroidism, or underactive thyroid, include fatigue, weight gain, and. How to use L-Thyroxine Tablet. Read the Patient Information Leaflet if available from your pharmacist before you start taking levothyroxine and each time you get a refill. Side effects are also most likely to occur within the first three months of treatment, so that is the time to be most vigilant. You Can't Afford Your Medication Paying for medications can be stressful.