Verapamil Difference Between Sr And Er (Page 2) (Top voted first)

I am taking verapamil SR 240mg. A lot of drug plans only offer it as ER. What's the difference?

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Check around with different pharmacies. My mail order couldn't get my Verapamil 240 SR, so I called several local chain drug stores and finally found one. I have been having that Rx filled by them for the past 5 months and my mail order, Express Scripts, still can't get a supply.

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I've been taking ER for yrs. Blue pill. Recently my pharmacy replaced them with SR green pill, saying it's the same thing. Well after about a week, I felt terrible, aches, bad stomach.

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Re: JonCat (# 8)

Do some research on the half-life of generic verapamil er and calan sr and you will find why you need larger doses and more often of generic verapamil. Also pharmacies will tell you they are the same because one is much more expensive and they do no want to get stuck with expired calan. Also a pharmacist is more concerned with business and the Dr. at least should be more concerned with his patient. I would trust the Dr. first every time. What I'm saying is from personal experience, these two drugs are just not equivalent in a twenty-four hour period. Even the suppliers don't have much stock of calan because it is more expensive. The FDA has neither the resources nor the authority to force these generic manufacturers to do studies. The difference is not as wide as it used to be, but they are not usually equal. You get what you pay for.

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Re: Murphy (# 15)

You’re 100 percent right. Not the same at all. The blood concentration level is much more uneven for the er hard tablet and varies much more with the individual. The sr dosage is released much more evenly which keeps your blood level more consistent. My wife had the exact same problem when switched.

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SR is 5 times more expensive than ER, and comes in capsule form rather than ER in a tablet. Both have the exact same molecular structure. The SR form (due to the capsule form) takes longer to absorb.

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There is a difference between verapamil ER and SR. One is taken once a day and the other is meant to be taken twice a day. That is what the pharmacist told me.

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Why is the cost of varapamil hcl er more expensive than varapamil hcl tablet? On my PDP hcl er is tier 2. 45.00 for a 30 day supply while hcl er tablet is 6.00 per 30 day supply on tier 1.

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ER and SR are just the same thuing with a different mfg., perhaps. NOTHING TO DO WITH ONCE OR TWICE A DAY!

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