Re: Specialty Distributor Purchase and Service Agreement between Hemispherx, Biopharma, Inc and Bio Ridge Pharma, LLC. Dear Dr. Carter,

BIORIDGE

PHARMA

Specially Distributors of Biotech Products

July 19, 2013

Xx. Xxxxxxx X. Xxxxxx

Chairman and CEO

Hemispherx Biopharma, Inc. JFK Boulevard

Suite 660

Philadelphia, Pa 19103

Re: Specialty Distributor Purchase and Service Agreement between Hemispherx, Biopharma, Inc and Bio Ridge Pharma, LLC.

Dear Xx. Xxxxxx,

Bio Ridge Pharma would like to request an extension to the above mentioned contract through August 14, 2014 subject to the same terms and conditions currently in place.

Please sign this acceptance letter as acknowledgment of the extension and return to my attention via fax or e-mail. I can be reached at 000-000-0000 if you have any questions

or concerns.

Regards,

Xxxxxx Xxxxxxxx

CFO

Bio Ridge Pharma, LLC

Phone: 000-000-0000

Fax: 000-000-0000

/S/: Xxxxxxx X. Xxxxxx

(signature)

Xxxxxxx X. Xxxxxxx

(print name)

CEO and Chairman

(Title)

7/23/2013

(Date)