Penicillin G Procaine: uses, dosing, side effects & brands
Penicillin G Procaine is a medicine sold in the U.S. under one brand. Below: what the FDA label says, every product that contains it, what the pills look like, and its recall record.
Key facts
- Available as
- Injectable
- Sold as
- Pfizerpen-As
- Prescription?
- Prescription only
- Generic available?
- Yes
Every penicillin g procaine product we track (1)
Same active ingredient — different manufacturer, form, price and FDA recall record. That last one is what our independent score measures.
Only one: Pfizerpen-As.
Combination products containing penicillin g procaine
A combination is a different drug — different dosing, different warnings. It is listed here so you can find it, not so you can substitute it.
What people report to the FDA about penicillin g procaine
The FDA Adverse Event Reporting System (FAERS) collects reports from patients and clinicians. It holds 329 reports naming penicillin g procaine, and the FDA flagged 29% of those reports as serious. The effects reported most often — leaving out reports about overdose, misuse or the condition being treated, which dominate the raw list for common medicines:
- drug hypersensitivity197 reports
- hypersensitivity41 reports
- rash29 reports
- urticaria23 reports
- drug intolerance17 reports
- white blood cell count decreased17 reports
- rheumatoid arthritis16 reports
- anaphylactic reaction14 reports
Read these as a signal, not a rate. A report does not mean penicillin g procaine caused the effect — anyone can file one, and many describe people taking several medicines for several conditions. Crucially there is no denominator: FAERS does not record how many people took the drug, so these counts cannot be turned into “X% of patients” — a bigger number often just means a more widely used or more talked-about drug. Duplicates exist, and publicity drives reporting. For what is actually established, read the FDA label section above.
Source: openFDA drug/event (FAERS), retrieved July 25, 2026.
Related calculators
Frequently asked questions
Can you take penicillin g procaine with other medicines?
It depends on the medicine. We check it against the FDA labels rather than guessing: our interaction checker searches each drug's own label for the other and quotes what it says, naming the section it came from. Run penicillin g procaine against whatever else you take — and remember that a label not naming a drug is not the same as that combination being safe.
What forms does penicillin g procaine come in?
Across the brands we track, penicillin g procaine is currently marketed as injectable, per the FDA's National Drug Code Directory. Each form is dosed differently — follow the label for the exact product you were prescribed.
Is there a generic penicillin g procaine?
Yes. Our catalog lists 1 generic penicillin g procaine product alongside the brand versions. A generic has the same active ingredient and must meet the FDA's bioequivalence standard; it usually costs less. Ask your pharmacist which one your plan covers.
Cite this page
- APA
- pharmaranks. (2026, July 24). Penicillin G Procaine: uses, dosing, side effects & brands. https://pharmaranks.com/drugs/penicillin-g-procaine
- MLA
- “Penicillin G Procaine: uses, dosing, side effects & brands.” pharmaranks, 24 July 2026, https://pharmaranks.com/drugs/penicillin-g-procaine.
We summarise public FDA and NIH sources — for a clinical claim, cite the primary source we link to as well.
Sources: FDA openFDA drug label, National Drug Code Directory, and Enforcement (recall) database. This page reproduces public FDA data and is not medical advice. Dosing is set by your prescriber.
Read the full FDA label for penicillin g procaine on DailyMed (NIH) ↗.