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Doctors' Answers to "Frequently Asked Questions" - Multiple Medications
Answer: Off hand there should be no interactive adverse reactions between these drugs. Aspirin can produce asthma in susceptible patients; but, I suspect you would know if this drug produces asthma in your lungs. Also, Zyrtec has been implicated in liver problems on occasional patients-so, I would check this drug first. The other drugs shouldn't produce too many problems. The duratuss and the meclizine would be the next drugs I'd eliminate in order of potential problems.
Synthroid & Lipitor
Answer: No interaction as far as I know; but, checking your TSH will answer the question.
Answer: Phenobarbital is one of the older drugs in medicine being invented in 1912 as the first seizure medication. Some patients do experience idiosyncratic reactions to this or any drug. But, it has nothing to do with modern "drug engineering".
Insulin & Lasix
Answer: Diuretics have the potential to elevate glucose somewhat. The mechanism of action is not entirely clear; but, there does not appear to be any direct effect between lasix and insulin.
Answer: There is a difference between Q6H and QID. These are both pharmaceutical terms. The first means every 6 hours the other means four times a day. In the hospital Q6H means every 6 hours regardless of whether one is sleeping, QID means before bed-on arising and about every 6 hours during the day. Most outpatients take medications QID not Q6H. But, there is a difference-check with your physician. AC means before meals and usually means 20-30 minutes before meals. PC means after meals and usually 20-30 minutes after eating.