Jerry replied: "Yes . It may well be part of you problem I too took synthroid for a short time and before I knew it I was unable to sleep for more than a few minutes at a time . After reviewing this problem with my doctor he removed me from synthroid and replaced it with levothyroxine , which is a generic source of the same medication , which also makes it cheaper. Also the dosage of your medication may be a little much for you have you doctor look into this alternate medication . If you check out synthroid on line you also find that after forty years of use the FDA has yet to approve it . Because the formula continues to change . Lots of luck and best wishes with this . But I caution you do not wait too long to check with your docto . losing sleep is very dangerous ."

huggz replied: "She needs to get the synthyroid and start taking it fairly quickly. I'm not familiar with the US system of health care but this sounds very wrong! She should not have been left with no meds. Maybe she should go to the ER."

Zsa*Zsa* Galore replied: "I used to take Synthroid but, never had any dizziness. The patient insert lists nervousness but, no dizziness. Call your doctor & let them know about your symptoms. They may need to adjust your dose but, they usually say that it takes about 4-6 weeks for you to really feel the difference. Synthroid has a long list of drugs that can cause interactions. They are: Amiodarone Androgens (male hormones) Antacids and anti-gas medications Antidepressants Blood pressure drugs Blood-thinning drugs such as warfarin and heparin Chloral hydrate (a sedative) Cholesterol-lowering drugs Diabetes drugs, including insulin Digitalis-type drugs such as digoxin Estrogen products and oral contraceptives Furosemide Growth hormones Hormone inhibitors Immune system drugs such as interferon and interleukin Iodide Iron supplements Kayexalate Ketamine Lithium Methadone and heroin Metoclopramide Nonsteroidal anti-inflammatory drugs such as phenylbutazone and aspirin Parkinson's drugs Propylthiouracil (a thyroid inhibitor) Seizure medications Steroids such as dexamethasone and hydrocortisone Stimulants such as epinephrine Sucralfate The cancer drugs 5-fluorouracil, 6-mercaptopurine, mitotane, and tamoxifen The tranquilizers perphenazine and diazepam The tuberculosis drugs aminosalicylate, rifampin, and ethionamide Theophylline A high-fiber diet, soy-containing supplements, and walnuts can also interfere with the effects of levothyroxine. Tell your doctor if you take any of these prescription drugs. *Also, high blood pressure & diabetes are conditions listed that may cause your symptoms to be worse.... these conditions may affect your dosage. The extra fatigue, dizziness, & diarrhea may indicate that you are getting overstimulated. Definitely call your doctor....you may need to have more blood work done to check your current thyroid levels. Good luck!"

Bob G replied: "It really isn't dependent on the dose of synthroid. The real question is the type of thyroid problem you have. If it is simple hypothyroidism most cold medicines are safe to use. However, the first and most important thing is to talk to your doctor about it. Even a pharmacist can give you good advice. Please do not rely on advice given here."

Roger N replied: "There is no other. Go get your T3 checked again."