Pfizerpen is a brand-name prescription antibiotic (penicillin) used to treat severe bacterial infections that will respond to penicillin treatment. The active ingredient in Pfizerpen, penicillin g potassium or benzylpenicillin, works against bacteria that cause pneumonia, meningitis, anthrax, syphilis, gonorrhea, Lyme disease, syphilis, and other infections. Pfizerpen is administered as an intramuscular injection or intravenous infusion by a healthcare provider at a hospital or clinic. Pfizerpen costs $55.65 at full price, but this may vary depending on the clinic or hospital. If the clinic or hospital accepts SingleCare, a SingleCare Pfizerpen coupon reduces that price to $7.72.
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SingleCare’s prescription prices are based on multiple sources. The prices we publish are our best estimate, but we cannot guarantee that the price we display will exactly match the price you receive at the pharmacy. For an exact price, please contact your pharmacy and provide the BIN/GRP/PCN numbers shown on your SingleCare card.
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Prices updated: 12/05/2025
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Pfizerpen is a brand-name prescription antibiotic (penicillin) used to treat severe bacterial infections that will respond to penicillin treatment. The active ingredient in Pfizerpen, penicillin g potassium or benzylpenicillin, works against bacteria that cause pneumonia, meningitis, anthrax, syphilis, gonorrhea, Lyme disease, syphilis, and other infections. Pfizerpen is administered as an intramuscular injection or intravenous infusion by a healthcare provider at a hospital or clinic. Pfizerpen costs $55.65 at full price, but this may vary depending on the clinic or hospital. If the clinic or hospital accepts SingleCare, a SingleCare Pfizerpen coupon reduces that price to $7.72.
Pfizerpen is a brand-name prescription antibiotic (penicillin) used to treat severe bacterial infections that will respond to penicillin treatment. The active ingredient in Pfizerpen, penicillin g potassium or benzylpenicillin, works against bacteria that cause pneumonia, meningitis, anthrax, syphilis, gonorrhea, Lyme disease, syphilis, and other infections. Pfizerpen is administered as an intramuscular injection or intravenous infusion by a healthcare provider at a hospital or clinic. Pfizerpen costs $55.65 at full price, but this may vary depending on the clinic or hospital. If the clinic or hospital accepts SingleCare, a SingleCare Pfizerpen coupon reduces that price to $7.72.
At most clinics or hospitals, the full cost of Pfizerpen will be $55.65. That same prescription could cost $7.72 using a SingleCare savings card. Ask the case manager at the clinic where you receive Pfizerpen injections if they will accept a SingleCare discount card if you're paying cash for Pfizerpen.
The copay cost of Pfizerpen varies greatly depending on your insurance plan and the price set by the clinic or hospital where the injection is administered. With SingleCare, Pfizerpen costs only $7.72. You will typically not purchase Pfizerpen at a pharmacy. It is administered by a healthcare professional at a clinic or hospital.
Pfizerpen is usually covered by Medicare Part D and Medicare Advantage prescription drug plans. Patients without Medicare coverage of Pfizerpen could use a SingleCare Pfizerpen coupon to reduce their cost to as little as $7.72 for 1, 5,000,000 units per vial vial. Talk to your patient advisor at the hospital or clinic where you have received Pfizerpen injections to find out if they accept SingleCare.
Pfizerpen is a brand-name prescription injection administered by a physician. Other brand-name versions include Bicillin and Permapen. Generic Pfizerpen is sold as penicillin g potassium and is available from manufacturers such as Fresenius Kabi and Teva. You can find SingleCare savings coupons for Bicillin and generic penicillin g potassium by searching the SingleCare website or app.
Pfizerpen is a brand-name prescription penicillin antibiotic. Penicillins are highly effective at killing a wide range of bacteria responsible for pneumonia, meningitis, anthrax, diphtheria, syphilis, Lyme disease, gonorrhea, listeria, rat-bite fever, and blood infections.
Pfizerpen is prescribed to patients who need either a rapid or a high dose of penicillin. The active ingredient in Pfizerpen, penicillin g potassium or benzylpenicillin, kills bacteria by interfering with their ability to form a cell wall. As the bacteria cell walls deteriorate, the cell contents spill out and the bacteria die.
Pfizerpen is administered as an intramuscular injection or an intravenous infusion by a healthcare professional. In certain circumstances, Pfizerpen may be injected directly into the lung cavity or spinal canal.
The most common side effects of Pfizerpen are temporary site reactions to the injection such as pain, redness, and swelling. These will pass in a short time. Otherwise, penicillin causes few side effects at normal doses. However, a significant number of people are allergic to penicillin (anywhere from 0.7% to 10% of the population), so patients will be monitored closely when given a Pfizerpen injection.
The most common longer-term side effects include skin rashes and itching. The most serious side effects of Pfizerpen include potassium poisoning or heart failure (at continuous high doses). When Pfizerpen is used to treat spirochete infections (syphilis or Lyme disease), it can cause a life-threatening condition (Jarisch-Herxheimer reaction) when the body fills with the contents of dead bacteria. You will be monitored after the injection for fever, chills, headache, and low blood pressure.
Pfizerpen allergies are common, particularly in patients who have previously been exposed to penicillin. Allergic reactions include hives, rashes, itching, swelling, and difficulty breathing. The most serious allergic reaction is anaphylactic shock, a dangerous and potentially fatal drop in blood pressure. You will be monitored carefully after the injection for any allergic reaction.
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Prescription savings vary by prescription and by pharmacy, and may reach up to 80% off cash price. This is a medical discount plan. This is NOT insurance. This program offers you the opportunity to locate providers of various types of medical services who will offer their services to you at discounted rates. The range of discounts for medical or ancillary services provided under the plan will vary depending on the type of provider and service received. You are fully responsible for paying for all health care services but will be entitled to receive a discount from those health care providers in accordance with the specific pre-negotiated discounted fee schedule. This program does not guarantee the quality of the services or procedures offered by the providers. Except for prescription drugs which you will pay directly to the pharmacy at the time of purchase, all other services received through a program provider will be charged to the credit card on file in your member account. The charge will include an administrative fee for use of the program. Towers Administrators LLC is the licensed discount medical plan organization with its administrative office located at 4510 Cox Road, Suite 111, Glen Allen, VA 23060. SingleCare Services, LLC is the marketer of the discount medical plan organization including its website, singlecare.com, with its corporate office located at 99 High Street, Suite 2800, Boston, MA 02110. For additional information, including an up-to-date list of providers, or assistance with any issue related to program membership, please contact member support any time at www.singlecare.com, or by calling toll-free 844-234-3057, 24 hours, 7 days a week (except major holidays). Pharmacy names, logos, brands, and other trademarks are the property of their respective owners.
Blog articles are not medical advice. They are intended for general informational purposes and are not meant to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. If you think you may have a medical emergency, immediately call your physician or dial 911.
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© 2025 SingleCare Administrators. All rights reserved