Hi, thanks for your inquiry! I have been practicing law for 17+ years and have specific experience with issues similar to yours. That being said...
I am finding that it is variable, depending on the pharmacist (and/or the corporation he works for and the rules they place on their workers). According to the DEA:
Section 1306.14 Labeling of substances and filling of prescriptions.
(e) Where a prescription that has been prepared in accordance with section 1306.12(b) contains instructions from the prescribing practitioner indicating that the prescription shall not be filled until a certain date, no pharmacist may fill the prescription before that date.
Full codes sections on Prescriptions:
Moreover, even with a regular first prescription, the pharmacist is not prohibited from filling it on the spot unless the doctor indicated it couldn't be filled until after XX date. Now, that doesn't mean anything goes, because pharmacists have a broad duty to not fill a prescription if they have reason to believe it is not appropriate (such as too early), but it tells us that generally, there is no DEA mandate. In the "refill" sections of the code, there is nothing proscribing early refills at a particular date.
Texas State Board of Pharmacy tells us:
"...in making the decision to refill a prescription, the pharmacist must consider how long the medication should last (based on the directions for use and the quantity dispensed), and may refill it only after an appropriate amount of time has elapsed between refills. If you wish to receive a larger quantity of medication, the pharmacist must contact the doctor for authorization."
Now, that being said, many pharmacists won't refill unless within 5 days. Some carriers actually limit coverage to those refills filled within 5 days. Other pharmacists go 6-7 days, etc. Some only go 2 days. (My son's asthma medication we can not fill until within 5 days...)
However, your doctor can simply issue a new prescription for the additionals. For instance, if the 15 pills you have left + 10 pills more will get you to the 3rd day after you get back (when you can get that refill), the doctor can prescribe you those 10 extra, now, and a Pharmacist will fill it.
14 days early may be a stretch, when a Pharmacist would be taking a liability / professional risk in taking a customer's word for it that he will be camping and can't possibly get to a pharmacy. This is particularly so when it is a strong pain medication,a narcotic, and the type that people get addicted to and at times overuse the medication (from a dosage/rx point of view) when their tolerance level rises, making their 1 month supply last only 2 weeks. A pharmacist has no personal knowledge of the truth, (and this is no reflection on you of course!) and so it is not unlikely that 14 days may not be permitted by any of them - I don't know that you will find a pharmacist that will go that far. Rather, you may just want to get your doctor to issue you an abbreviated prescription for the gap period, rather than run around trying to find a lenient pharmacist.
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