
Package | Dosage | Price | Price per Dose | |
---|---|---|---|---|
Dosage: 250mg | ||||
360 pill | 250mg | AUD456.12 | AUD1.26 | |
180 pill | 250mg | AUD272.67 | AUD1.51 | |
90 pill | 250mg | AUD205.74 | AUD2.28 | |
60 pill | 250mg | AUD158.63 | AUD2.65 | |
30 pill | 250mg | AUD106.57 | AUD3.55 | |
Dosage: 500mg | ||||
360 pill | 500mg | AUD500.74 | AUD1.39 | |
120 pill | 500mg | AUD250.36 | AUD2.08 | |
90 pill | 500mg | AUD228.05 | AUD2.53 | |
60 pill | 500mg | AUD180.95 | AUD3.02 | |
30 pill | 500mg | AUD111.53 | AUD3.72 |
Principen Description
Overview
Principen is the brand name for ampicillin, an antibiotic in the penicillin family. In Australia it is prescribed by a doctor and supplied by registered pharmacies, including online services that require a valid prescription. The medicine works by inhibiting the growth of bacteria, helping your immune system clear the infection. It does not treat colds, flu, or other viral illnesses.
Generic ampicillin has a long history of use and a well established safety profile when taken as directed. Your pharmacist can explain how it fits with any other medicines you take and what to do if you miss a dose. In Australia, online orders must be supported by a current prescription and oversight from a licensed pharmacist to ensure the right product and dose are supplied.
How to take and dosing
Take Principen exactly as prescribed. For adults, typical doses range from 250 mg to 500 mg every six hours. Some infections may require higher doses, while children are dosed by weight. Take the tablets with a full glass of water, and you can take them with or without food. Try to take doses at evenly spaced times each day to keep a steady level in your blood.
Finish the entire course even if you feel better. Stopping early can allow the infection to return or contribute to resistance. If you miss a dose, take it as soon as you remember unless it is near the time for your next dose; do not double up. If you have kidney disease, your dose may be adjusted by your clinician, and frequent monitoring might be advised.
Tell your clinician about other medicines you take, as ampicillin can interact with certain drugs, and your dose may need adjusting. If you are pregnant or breastfeeding, discuss risks and benefits with your doctor before starting Principen.
Common side effects and safety
Most patients tolerate ampicillin well, but side effects occur in some people. The most common are stomach upset, nausea, diarrhea, and mild skin rashes. These usually pass as the body adjusts or after finishing treatment. If you notice persistent diarrhea or dehydration, contact a health professional.
Serious but rare reactions include severe allergic responses with swelling, wheeze, or a drop in blood pressure. If you notice signs of a severe allergy or have trouble breathing, seek urgent medical help. A yeast infection of the mouth or vagina can occur with antibiotics and may require treatment. Stop the medicine and consult your clinician if you develop a severe or unusual rash, blistering, or fever.
Australia: online pharmacies and practical tips
Online pharmacies in Australia require a current prescription and the guidance of a registered pharmacist. This helps ensure the right drug, dose, and duration for your infection. Prices vary and you may see generic ampicillin options. Store Principen in a cool, dry place away from light, and keep it out of reach of children. Always complete the prescribed course and report any unusual symptoms to your pharmacist.
Discuss potential interactions with other medicines, including hormonal contraception and anticoagulants. If you are pregnant, breastfeeding, have kidney or liver issues, or are elderly, inform your clinician before use. Use only medicines obtained from reputable sources to avoid counterfeit products. Your online order may include a pharmacist consultation option to review your medical history and allergies.
User experiences
Some users report rapid relief of throat or skin infections after a few days of therapy, while others notice slower improvement. A minority reports tummy upset or mild allergy symptoms. Overall, many Australians find Principen effective when used as prescribed and appreciate pharmacies that provide clear dosing instructions and ready access to a pharmacist for questions.
Several readers note that taking the medication with food helps reduce stomach upset, and keeping a simple symptom diary can help track response. If symptoms worsen or new symptoms appear, most advise contacting your doctor rather than extending the course on your own. A trusted local online pharmacy can offer guidance but should always verify prescription details with you.