Are tamper-resistant prescriptions required?

Yes, as of January 1, 2010 tamper resistant prescriptions will be required for all prescriptions.  
The Office of Vermont Health Access (OVHA) has required tamper resistant prescriptions since 2008. 

What does the rule require?

Written and electronic prescriptions must:

(1)   prevent unauthorized copying of a completed or blank prescription form,

(2)   prevent erasure or modification of information written on the prescription by the prescriber; and

(3)   prevent the use of counterfeit prescription forms.

Handwritten prescriptions must be written on a tamper resistant pad. 

Computer generated printed prescriptions must be printed on tamper resistant paper
or other tamper proof methods as defined by the Centers for Medicaid and Medicare Services,
including micro-printing and/or printing a "void" pantograph accompanied by a reverse "Rx,"
which causes a word such as "Void," "Illegal," or “Copy" to appear when the prescription is photocopied.

Prescriptions written which comply with Medicaid rules will satisfy this rule.

Where can I find more information about the requirement for tamper resistant prescriptions? 

The OVHA website has information about these prescriptions and a list of vendors.  Section 9.5 of
Board of Pharmacy Rules describes the requirements for tamper resistant prescriptions. 

Resources:

Office of Vermont Health Access provider website -- information about tamper resistant prescription pads: 

http://ovha.vermont.gov/for-providers/tamper-resistant-drug-pads

List of tamper-resistant prescription pad vendors from OVHA website:

http://ovha.vermont.gov/for-providers/tamper-resistant_prescription_pad_vendors.pdf

Maine Care information about tamper resistant prescriptions and vendors:

http://www.mainecarepdl.org/index.pl/home/tamper-resistant-prescription-pads 

Pharmacy Board Rules: http://vtprofessionals.org/opr1/pharmacists/rules/Pharmacy%20Rules%20Effective%20
October%201,%202009.htm  (See, Section 9.5 for tamper resistant prescription requirements.)