Penicillin represents one of the most important drugs ever developed. Its discovery in 1946 permanently changed medicine and set the stage for man’s ability to overcome what had previously been life-threatening infections.

Penicillin is effective in fighting infections in many places in the body including the urinary tract, lungs, ears, throat, skin and genital tract.

Penicillin V potassium is prescribed generically or under a variety of brand names including Beepen-VK, Betapen-VK, Ledercillin VK, Pen-V, Pen-Vee K, Robicillin VK, V-Cillin K and Veetids.

Side Effects and Interactions

The most common side effects of penicillin involve digestive tract upset. Nausea, vomiting and diarrhea can be troublesome for some people. A black hairy tongue, rash, sore mouth, and yeast infections of the mouth, anus or vagina are other potential adverse reactions.

Less common but possibly more serious side effects include anemia and blood disorders.

Report any symptoms to your physician promptly. Long-term treatment with penicillin-type antibiotics requires periodic monitoring by a health professional.

Penicillin VK may interact with aspirin and certain other arthritis medicines. In addition, oral contraceptives may be less effective in combination with this antibiotic.

Check with your pharmacist and physician before taking any other medicine together with Penicillin VK.

Special Precautions

Anyone who is allergic to penicillin-type antibiotics must generally avoid such drugs like the plague. Symptoms such as breathing difficulty, wheezing, sneezing, hives, itching, and skin rash require immediate emergency treatment.

Life-threatening anaphylactic shock may produce an inability to breathe and cardiovascular collapse and can occur within minutes of exposure.

If you are allergic to penicillin and you ever have to go into the hospital, make sure a sign is placed over the bed alerting hospital personnel to penicillin allergy.

Taking the Medicine

Penicillin VK resists acid breakdown in the stomach so it may be taken with food if it upsets your stomach.

However, for maximum absorption take this antibiotic on an empty stomach. That usually means at least one hour before meals or two hours after eating.

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  1. Mindy

    Well I’ve been dealing with bad wisdom teeth pain for many years now since I was 21 I’m 36 now and it’s getting to be more painful then ever and infected bad also went to er 2 days ago for the pain and infection and the er doctor gave me penicillian 250 mg for ten days and hydrocodone 5 325 for pain for 10 days also but I’m feeling sick to my stomach like nauseated bad but I still try to eat a little and I’m drinking plenty of fluids to but still sick and weak but I stop taking the pain meds as of bout 5 hrs ago started taking excedrin for pain cause I had a bad tension headache and a fever also but they both subsided thank god of that too but still weak and sick to my stomach soy question is…Do I need to stop the penicillian and excedrin or just one of them I’ve never been allergic to any type of antubotics before so I was just wondering what I need to and is this all normal from the pills I’m taking please help me anybody thank you appreciate anyone who can help me out?

  2. Theresa

    I was diagnosed with actinomycetes, a rare bacterial infection. I was prescribed penicillin v k 500MG 4x a day. I must continue this for 12 months. I am not sure what the long term side effects are going to be, since I am taking this for a whole year. I am only 33 years old and very worried on long term damage this will have on my immune system or any other problems this will cause me down the road.

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