MYLAN LABORATORIES INC.

OFFER TO EXCHANGE ALL OUTSTANDING

5.750% SENIOR NOTES DUE 2010

CUSIP #628530AA5, ISIN #US628530AA54

CUSIP #U62488AA6, ISIN # USU62488AA69

FOR

5.750% SENIOR NOTES DUE 2010 WHICH HAVE BEEN REGISTERED

UNDER THE SECURITIES ACT OF 1933, AS AMENDED

AND

6.375% SENIOR NOTES DUE 2015

CUSIP #628530AC1, ISIN # US628530AC11

CUSIP #U62488AD4, ISIN # USU62488AB43

FOR

6.375% SENIOR NOTES DUE 2015 WHICH HAVE BEEN REGISTERED

UNDER THE SECURITIES ACT OF 1933, AS AMENDED

                    , 2005

To our Clients:

      Enclosed for your consideration is a prospectus, dated                     , 2005 (the “Prospectus”), relating to the offer (the “Exchange Offer”) of Mylan Laboratories Inc. (“Mylan”) to exchange (i) an aggregate principal amount of up to $150,000,000 of its 5.750% Senior Notes due 2010 and the related subsidiary guarantees, which have been registered under the Securities Act of 1933, as amended, for a like principal amount at maturity of Mylan’s issued and outstanding 5.750% Senior Notes due 2010 and the related subsidiary guarantees (the “Old 2010 Notes”) and (ii) an aggregate principal amount of up to $350,000,000 of its 6.375% Senior Notes due 2015 and the related subsidiary guarantees, which have been registered under the Securities Act of 1933, as amended, for a like principal amount at maturity of Mylan’s issued and outstanding 6.375% Senior Notes due 2015 and the related subsidiary guarantees (the “Old 2015 Notes” and, together with the Old 2010 Notes, the “Old Notes”), upon the terms and subject to the conditions described in the Prospectus. Capitalized terms not defined herein shall have the respective meanings ascribed to them in the Prospectus.

      This material is being forwarded to you as the beneficial owner of the Old Notes held by us for your account but not registered in your name. A tender of such Old Notes may only be made by us as the holder of record and pursuant to your instructions.

      Accordingly, we request instructions as to whether you wish us to tender on your behalf the Old Notes held by us for your account, pursuant to the terms and conditions set forth in the enclosed Prospectus. You may only tender your Old Notes by book-entry transfer of the Old Notes into the exchange agent’s account at The Depository Trust Company.

      Your instructions should be forwarded to us as promptly as possible in order to permit us to tender the Old Notes on your behalf in accordance with the provisions of the Exchange Offer. The Exchange Offer will expire at 5:00 p.m., New York City time, on                     , 2005 unless extended by Mylan. Any Old Notes tendered pursuant to the Exchange Offer may be withdrawn at any time before the Expiration Date.

      Your attention is directed to the following:

1.	The Exchange Offer is for any and all Old Notes.
2.	The Exchange Offer is subject to certain conditions set forth in the Prospectus in the section captioned “The Exchange Offer — Conditions to the Exchange Offer.”
3.	Any transfer taxes incident to the transfer of Old Notes from the holder to Mylan will be paid by Mylan.
4.	The Exchange Offer expires at 5:00 p.m., New York City time, on                     , 2005 unless extended by Mylan.

      If you wish to have us tender your Old Notes, please so instruct us by completing, executing and returning to us the instruction form on the back of this letter.

INSTRUCTIONS WITH RESPECT TO

THE EXCHANGE OFFER

      The undersigned acknowledge(s) receipt of your letter and the enclosed material referred to therein relating to the Exchange Offer made by Mylan with respect to the Old Notes.

      This will instruct you to tender the Old Notes held by you for the account of the undersigned, upon and subject to the terms and conditions set forth in the Prospectus.

      Please tender the Old Notes held by you for my account as indicated below:

o  Please tender the Old Notes held by you for my account as indicated below:

AGGREGATE PRINCIPAL AMOUNT AT

MATURITY OF OLD NOTES

5.750% Senior Notes due 2010: $                    

6.375% Senior Notes due 2015: $                    

o  Please do not tender any Old Notes held by you for my account.

Dated:                     , 2005

Signature(s):

Print Name(s) here:

Print Address(es):

Area Code and Telephone Number(s):

Tax Identification or Social Security Number(s):

      None of the Old Notes held by us for your account will be tendered unless we receive written instructions from you to do so. Unless a specific contrary instruction is given in the space provided, your signature(s) hereon shall constitute an instruction to us to tender all Old Notes held by us for your account.