Covid-19 Service Update

At Medix Pharmacy, the health and safety of our customers and staff is our highest priority. Due to the worldwide Covid-19 pandemic affecting us all, there have been some changes within our industry in general, and in our company specifically, that we want to make our customers aware of.

Call Center

Our current call center hours of operation are 6AM – 9PM every day, seven days per week. If you are experiencing increased hold times or are calling outside of these hours, please leave us a message or send us an email and we will get back to you as soon as we can. Due to increased demand on telephone networks worldwide, you may experience some intermittent connection problems. If this happens our agents will call you back.


We are currently seeing delays in our regular shipping times. Our normal shipping time averages 1 - 2 weeks. Shipments may now take an additional 2 – 4 weeks or more to arrive, depending on the source country of your order.

Please note that these times are averages and individual shipping times will vary. We highly recommend that you place your order at least 2 – 4 weeks or more ahead of your normal reorder time to avoid running out of your medication.

These are industry-wide delays and are mainly occurring due to disruptions in local postal delivery in the countries where our customers live. They are temporary, and we thank the shipping and delivery personnel who are working hard for all of us during this global crisis.

Please Note: As these types of shipping delays are not within our direct control, we are temporarily adjusting our regular Shipping Guarantee from 30 days to 60 days. We will provide updates as the situation changes.

Our Commitment

If you have any questions about any changes in our service please do not hesitate to contact us. Our staff are working tirelessly to ensure the timely fulfillment and delivery of all orders. The health of our customers and staff is our highest priority and we remain committed to providing service at the highest level.

We thank you for your support in these challenging times.

Management and Staff
Medix Pharmacy


Prescription Settings Edit

Brand Name Choices

Denavir 1%
Denavir 1% Cream

Marketed as Fenistil Cold Sore Cream in United Kingdom


Manufactured by Novartis

Product of United Kingdom

Dispensed by a licensed pharmacy in the United Kingdom

Prescription Required

Parallel Import

Generic Choices

No generic medication is available for Denavir (Penciclovir)

What Denavir is and what it is used for

The active ingredient in this medicine is Penciclovir, an antiviral which is used to treat infections caused by viruses. Fenistil Cold Sore Cream can be used to treat cold sores on the lips and around the mouth. You must talk to a doctor if you do not feel better or if you feel worse after 4 day

How to take Denavir

Always use this medicine exactly as described in this leaflet or as your doctor or pharmacist has told you. Check with your doctor or pharmacist if you are not sure. Start treatment at the earliest sign of a cold sore (symptoms such as, tingling, redness and itching). Adults and children over 12 years: Apply the cream in a thin layer over the cold sore. Apply the cream every 2 hours during the day, for 4 days. Always wash your hands before and after applying the cream. If the cold sore gets worse or does not improve after 4 days, talk to your pharmacist or doctor. Use to treat cold sores on the lips and face only. Do not apply this medicine to the inside of your mouth, around the eyes or the genital area. Use in children Fenistil Cold Sore Cream is not recommended for the treatment of children under 12 years of age. If you use more Fenistil Cold Sore Cream than you should There are unlikely to be any harmful effects if you have used a large amount of cream on your skin all at once, although some irritation of the skin may occur. If you forget to use Fenistil Cold Sore Cream Apply the next application as soon as you remember and carry on as before. Do not apply more cream to make up for a forgotten dose. If you accidentally swallow Fenistil Cold Sore Cream Fenistil is not harmful if accidentally swallowed and no treatment is necessary but it may cause irritation in the mouth. Please contact your doctor or pharmacist if you are concerned. What general precautions should you take when you have a cold sore Remember cold sores are infectious. To prevent the virus infecting other parts of the body, or passing the virus to other people, it is important when you have a cold sore to:
• Avoid kissing, especially children.
• Avoid oral sex.
• Use only your own towel and face cloth and do not share cutlery, cups, glasses, etc.
• Avoid breaking the blisters or picking sores, as this may prolong the healing process.
• Avoid touching your eyes, as the virus can cause a serious condition if it gets into the eyes. Do not give this cream to other people, even if their symptoms are the same as yours. If you have any further questions on the use of this medicine, ask your doctor or pharmacist

Possible side effects

Like all medicines, Fenistil Cold Sore Cream can cause side effects, although not everybody gets them. The side effects caused by Fenistil are usually mild in intensity. Some common side effects are: initial itching, burning, stinging or numbness where the cream has been applied (may affect up to 1 in 10 people). Some people have also reported allergic-type reactions such as allergic dermatitis, rash, raised and itchy bumps or swelling of the area where the cream has been applied. If this happens stop using the cream and seek medical advice. Reporting side effects If you get any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet. You can also report any side effects directly to the Medicines and Healthcare products Regulatory Agency (MHRA), through the Yellow Card Scheme; you can make a report by filling in a Yellow Card (available) from pharmacies), by phoning Freephone 0808 100 3352. By reporting side effects you can help provide more information on the safety of this medicine.

How to Store Denavir

Keep this medicine out of the sight and reach of children. Do not use Fenistil Cold Sore Cream after the “Use By” date which is stated on the tube and carton. The “Use By” date refers to the last day of that month. Do not store above 30 °C. Store in the original pack. Do not freeze. Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help protect the environment.

Fast Shipping

2 to 3 weeks on average

The average shipping time is 2 weeks in North America and 4 weeks internationally. We offer free shipping on all orders shipped to North America. Shipping is a flat rate of $20.00 for all other countries.

Price Match Guarantee

If you have been prescribed medication by your doctor and cannot afford the high price at your local pharmacy, Medix Pharmacy is the solution for you. All orders are backed with a price match and satisfaction guarantee.

About Medix Pharmacy

Medix Pharmacy is a fully licensed pharmacy in the United Kingdom who provides competitive pricing on brand and generic medications with international shipping.

We are regulated by a number of executive government agencies in the United Kingdom including the Medicines and Healthcare products Regulatory Agency and the GPhC to ensure we offer our customers the highest level of service and peace of mind knowing that the medicines that you receive are safe, effective and authentic.

Drug prices for Denavir vary throughout the world with the highest prices generally in the United States. Patients can save significantly on their prescriptions drugs when purchasing them from a licensed pharmacy in the United Kingdom and other countries such as Canada, Australia, and New Zealand.

If you are unable to find your prescribed medicine on our website, please fill out the form below and we will confirm pricing and availability within 1 business day. You may also call us at 1-866-500-6633 and one of our patient care representatives will be happy to assist you.