How does Penicillin G Potassium interact with other medications or food?

Penicillin G Potassium does not have many interactions with foods or beverages. However, if you take a tetracycline antibiotic, sulfa drug or a macrolide antibiotic, or birth control medication, you will need to tell your doctor before using this drug. Be sure to mention all other medications you may be taking, including vitamins, minerals and herbal supplements. Penicillin G Potassium is relatively non-toxic and typically only requires dosage adjustments in combination with other drugs or kidney impairment. If you take insulin, or any oral medication for diabetes, warfarin, methoxtrexate or chloroquine phosphate, you may not be able to take this drug. Your doctor will need to run special tests to determine if you can, and if special monitoring will be needed. It is important to discuss all other medications with your doctor, including over-the-counter, vitamins, minerals and herbal supplements.