Filed Pursuant to Rule 424(b)(3)
Registration No. 333-136188
PROSPECTUS SUPPLEMENT NO. 12
(TO PROSPECTUS DATED JULY 31, 2006)
$750,000,000
ALLERGAN, INC.
1.50% CONVERTIBLE SENIOR NOTES DUE 2026
SHARES OF COMMON STOCK ISSUABLE UPON CONVERSION OF THE NOTES
This Prospectus Supplement No. 12 supplements and amends the Prospectus dated July 31, 2006
(as amended, the “Prospectus”), relating to the resale from time to time by holders of our 1.50%
Convertible Senior Notes Due 2026 and shares of our common stock issuable upon the conversion of
the notes of such securities. Such information has been obtained from the selling securityholders.
This prospectus supplement should be read in conjunction with the Prospectus, which is to be
delivered with this prospectus supplement.
The information appearing in the table below, as of the date hereof, supplements and amends
the information in the table appearing under the heading “Selling Securityholders” in the
Prospectus, and, where the name of a Selling Securityholder identified in the table below also
appears in the table in the Prospectus, the information set forth in the table below regarding that
Selling Securityholder supercedes the information in the Prospectus:
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PRINCIPAL |
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AMOUNT OF |
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NOTES |
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COMMON |
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COMMON |
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BENEFICIALLY |
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PERCENTAGE |
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STOCK OWNED |
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STOCK |
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OWNED AND |
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OF NOTES |
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PRIOR TO THE |
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OFFERED |
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| NAME OF SECURITY HOLDER |
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OFFERED HEREBY |
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OUTSTANDING |
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OFFERING |
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HEREBY (1) |
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Government of Singapore Investment
Corp Pte Ltd |
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6,325,000 |
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* |
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46,662 |
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49,937 |
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Government of Singapore Investment
Corporate Pte Ltd |
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16,705,000 |
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2.23 |
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118,215 |
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131,889 |
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Lehman Brothers Inc. |
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6,500,000 |
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* |
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0 |
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51,318 |
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(1) The number of shares of common stock offered hereby includes shares of common stock into which
the notes are convertible. The number of shares of common stock offered hereby is based on a
conversion rate of 7.8952 shares of common stock per $1,000 principal amount of maturity of the
notes. Information concerning other Selling Securityholders will be set forth in prospectus
supplements from time to time, if required. The number of shares of common stock owned by the other
Selling Securityholders or any future transferee from any such holder assumes that they do not
beneficially own any common stock other than common stock into which the notes are convertible at a
conversion rate of 7.8952 shares of common stock per $1,000 principal amount of maturity of the
notes.
INVESTING IN THE NOTES OR THE COMMON STOCK ISSUABLE UPON CONVERSION OF THE NOTES INVOLVES A
HIGH DEGREE OF RISK. PLEASE CONSIDER THE “RISK FACTORS” BEGINNING ON PAGE 5 OF THE PROSPECTUS.
NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION HAS
APPROVED OR DISAPPROVED OF THESE SECURITIES OR DETERMINED IF THE PROSPECTUS IS TRUTHFUL OR
COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
The date of this prospectus supplement is March 12, 2007.