Macugen (pegaptanib sodium injection) is a sterile, aqueous solution containing
pegaptanib sodium for intravitreous injection. Macugen is supplied in a single-dose,
pre-filled syringe and is formulated as a 3.47 mg/mL solution, measured as the
free acid form of the oligonucleotide. The active ingredient is 0.3 mg of the
free acid form of the oligonucleotide without polyethylene glycol, in a nominal
volume of 90 μL. This dose is equivalent to 1.6 mg of pegaptanib sodium (pegylated
oligonucleotide) or 0.32 mg when expressed as the sodium salt form of the oligonucleotide
moiety. The product is a sterile, clear, preservative-free solution containing
sodium chloride, monobasic sodium phosphate monohydrate, dibasic sodium phosphate
heptahydrate, hydrochloric acid, and/or sodium hydroxide to adjust the pH and
water for injection.
Pegaptanib sodium is a covalent conjugate of an oligonucleotide of twenty-eight
nucleotides in length that terminates in a pentylamino linker, to which two
20-kilodalton monomethoxy polyethylene glycol (PEG) units are covalently attached
via the two amino groups on a lysine residue.
Pegaptanib sodium is represented by the following structural formula:
Where R is
and n is approximately 450.
The chemical name for pegaptanib sodium is as follows: RNA, ((2'-deoxy-2'-fluoro)C-Gm-Gm-A-A-(2'-deoxy-2'-fluoro)U-(2'-deoxy-2'-fluoro)C-Am-Gm-(2'-deoxy-2'-fluoro)U-Gm-Am-Am-(2'-deoxy-2'-fluoro)U-Gm-(2'-deoxy-2'-fluoro)C-(2'-deoxy-2'-fluoro)U-(2'-deoxy-2'fluoro)U-Am-(2'-deoxy-2'-fluoro)U-Am-(2'-deoxy-2'-fluoro)C-Am-(2'-deoxy-2'-fluoro)U-(2'deoxy-2'-fluoro)C-(2'-deoxy-2'-fluoro)C-Gm-(3'→3')-dT),
5'-ester with α,α'-[4,12-dioxo-6[[[5-(phosphoonoxy)pentyl]amino]
The molecular formula for pegaptanib sodium is C294H342F13N107Na28O188P28[C2H4O]n
(where n is approximately 900) and the molecular weight is approximately 50
Macugen is formulated to have an osmolality of 280-360 mOsm/Kg, and a pH of
What are the possible side effects of pegaptanib (Macugen)?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have a serious side effect such as:
- eye pain, redness, or irritation;
- drainage or discharge from your eyes;
- feeling that your eyes are more sensitive to light; or
- trouble seeing, or other vision changes.
Less serious side effects may include:
- diarrhea, nausea, vomiting, upset stomach;
Read All Potential Side Effects and See Pictures of Macugen »
Last reviewed on RxList: 10/28/2011
This monograph has been modified to include the generic and brand name in many instances.