What to Do If Your Clinic Can’t Get Bicillin L-A During Pregnancy

If you are pregnant and your clinic says it cannot get Bicillin L-A for syphilis treatment, ask for a same-day plan from your obstetric or prescribing team. Do not delay care on your own, and do not assume a similarly named product is interchangeable. In pregnancy, penicillin remains the only recommended treatment that can treat the infection in the fetus and help prevent congenital syphilis.

Why this shortage is especially urgent in pregnancy

CDC says benzathine penicillin G is the only known effective treatment during pregnancy for treating fetal infection and preventing congenital syphilis. That makes this shortage different from many other drug shortages: a delay can affect both the pregnant patient and the baby.

Supply problems are still not fully resolved. CDC continued to describe Bicillin L-A as being in limited availability in its April 23, 2026 shortage update, and FDA‘s shortage page in June 2026 listed an extended recovery timeline into late 2027 for some presentations. Timing matters. CDC also notes that treatment may be inadequate if delivery happens within 30 days of therapy.

What to ask your clinic right away

Can you locate Bicillin L-A at another office, hospital, public health clinic, or health department?
If not, can you arrange treatment with an FDA-allowed temporary imported benzathine penicillin product?
What stage of syphilis am I being treated for, and how many doses are needed?
If I have a history of penicillin allergy, what is the plan for allergy evaluation or desensitization?
If I need weekly doses, how will you help me stay on schedule?

These are reasonable same-day questions. CDC’s pregnancy guideline says pregnant patients should receive the penicillin regimen recommended for their stage of infection. It also says there are no proven alternatives to penicillin for syphilis treatment during pregnancy. If a patient has a true penicillin allergy history, the recommended path is desensitization followed by penicillin treatment.

What clinics may use during the shortage

If your usual site cannot obtain Bicillin L-A, the answer is not always “wait.” CDC has urged health systems to preserve available benzathine penicillin for pregnant patients when possible, and FDA has allowed temporary importation of certain benzathine penicillin products to help cover the shortage.

One example is Lentocilin. FDA’s Dear Healthcare Provider letter says Lentocilin is not FDA-approved in the United States, even though it is being temporarily imported to address the shortage. That does not mean a patient should refuse it. It means the clinic needs to follow product-specific instructions carefully.

For patients, the main practical differences are worth knowing. Lentocilin uses foreign labeling, is supplied as a powder that must be reconstituted rather than as a prefilled syringe, and must be given by deep intramuscular injection. FDA also notes that the product contains soy phospholipids, which may matter for someone with a soybean allergy history. If your care team mentions Lentocilin or another imported benzathine penicillin product, ask them to confirm exactly which product they are using and whether any special precautions apply.

Why Bicillin C-R is not the same thing

The names are easy to confuse, but Bicillin C-R is not the standard product CDC recommends for treating primary, secondary, and latent syphilis in the United States. CDC has specifically warned about inadvertent use of Bicillin C-R instead of Bicillin L-A. More broadly, CDC says combinations of benzathine penicillin, procaine penicillin, and oral penicillin preparations are not considered appropriate for syphilis treatment. If a clinic mentions Bicillin C-R, ask them to verify the exact drug and why it is being used.

Do not let weekly dosing slip

Some stages of syphilis require more than one dose. For pregnant patients being treated for late latent syphilis, CDC says the ideal interval is 7 days and gaps of more than 9 days are not acceptable. If the next injection may be delayed because of supply, scheduling, transportation, or insurance problems, tell the clinic right away. A missed dose can mean restarting the full course.

When to seek care quickly

After treatment in the second half of pregnancy, seek obstetric attention if you develop fever, contractions, or decreased fetal movement. Get emergency help right away for signs of a severe allergic reaction after an injection, such as trouble breathing, swelling of the face or throat, or fainting.

Bottom line

If one clinic cannot get Bicillin L-A, the safest next step is not to wait. Ask your obstetric or prescribing team the same day to locate supply elsewhere or arrange treatment at a site that can safely give the correct penicillin product. In pregnancy, syphilis treatment delays should be treated as a time-sensitive access problem, not a routine refill issue.

Sources

Editorial note: Weence articles are researched from cited public-health, medical, regulatory, journal, and reputable news sources and may be drafted with AI assistance. They are checked for source support, clarity, and safety guardrails before publication.

This article is for general informational purposes only and is not medical advice. Research findings can be early or incomplete, and health guidance can change. Always talk with a qualified healthcare professional about personal symptoms, diagnosis, medications, vaccines, screenings, or treatment decisions. If you think you may have a medical emergency, call emergency services right away.