Do I need a prescription to buy Herpesan 2% Gel?

No. Herpesan 2% Gel is a non-prescription product and can be ordered without a prescription. It is still dispensed by a registered pharmacist on DoctorOnCall.

What does Herpesan 2% Gel contain?

Herpesan 2% Gel is a gel containing Carbenoxolone 2%. The full ingredient list is shown in the Composition or Ingredients section on this page and on the product packaging.

What pack sizes does Herpesan 2% Gel come in?

It is supplied in a pack size of 5g. Choose the pack size you need from the options shown on this page before adding the item to your cart.

Why is there no information here about what Herpesan 2% Gel is for?

This page is limited to product, safety and handling information in line with Malaysian rules on medicine information. If you want advice on whether this product suits you, book an online consultation with a doctor or pharmacist on DoctorOnCall.

How should I use Herpesan 2% Gel?

Follow the instructions printed on the label and in the leaflet supplied with the pack, and do not exceed the stated amount or duration. Handling steps are set out in the Directions for Use section on this page.

Can I speak to a doctor or pharmacist about Herpesan 2% Gel before I buy it?

Yes. DoctorOnCall offers online consultations with licensed doctors and registered pharmacists, so you can ask about this product, your existing medicines, or anything on the label before you place an order.

What should I do if I notice side effects after using Herpesan 2% Gel?

Stop using the product and speak to a doctor or pharmacist about any reaction that concerns you. Seek medical care immediately for signs of a severe reaction such as difficulty breathing, swelling of the face, lips or throat, or a widespread rash. Reported reactions are listed in the Side Effects section on this page.

How long will delivery take?

Within Malaysia, standard delivery takes 3 to 5 working days. Same-day delivery is available in the Klang Valley for orders placed before 12pm; orders placed after 12pm arrive by the end of the next day. Orders to Singapore are sent as international deliveries and take 5 to 9 working days. A lump-sum shipping and handling fee applies to every overseas delivery and is shown at checkout.

What payment methods can I use?

Customers in Malaysia can pay by FPX online banking, credit or debit card (Visa and Mastercard), and supported e-wallets including Touch ‘n Go eWallet, GrabPay and ShopeePay. FPX and local e-wallets are tied to Malaysian bank and wallet accounts, so if your delivery address is in Singapore, use the payment options displayed at checkout for that address rather than assuming the same list applies.

Can Herpesan 2% Gel be delivered to Singapore?

Yes. DoctorOnCall ships to Singapore as an international order dispatched from Malaysia, arriving in 5 to 9 working days with a lump-sum shipping and handling fee. Singapore’s Health Sciences Authority (HSA) allows personal imports of up to three months’ supply of a medicine for your own use or an immediate family member’s, as long as it contains no controlled drugs, psychotropic substances or prohibited items. Keep the product in its original labelled packaging and keep a copy of your prescription or doctor’s letter with it. Quantities above three months’ supply, and medicines containing controlled substances, require prior HSA approval.

Is Herpesan 2% Gel registered with the authorities?

Products listed on DoctorOnCall are registered with Malaysia’s Ministry of Health for supply in Malaysia, and each pack carries its MAL registration number. An order delivered to Singapore arrives as a personal import of a Malaysia-registered product; HSA product registration is not required for personal-use quantities, but it is also not the same as a product registered for sale in Singapore. If you need a locally registered Singapore product, buy it from a pharmacy in Singapore.

Who do I contact if there is a problem with my order?

DoctorOnCall’s customer care team handles order, delivery and product queries through the contact channels on the site, including WhatsApp and the online help centre. For deliveries to Singapore, allow more time before chasing an order than you would for a local Malaysian delivery, as the parcel passes through customs clearance and tracking updates can appear later in the journey.

Herpesan 2% Gel | aciclovir | cold sore herpes antiviral gel | DoctorOnCall Malaysia

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Herpesan 2% Gel

Brand Rowa

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Reviewed byDr. Mohd Izzat Amir Bin AwangDoctor of Medicine (MD), University of Mansoura - Manchester

Written byDr. Adeline Carol PetersBachelor of Medicine and Bachelor of Surgery (MBBS) — Manipal Academy of Higher Education (MAHE)

Last updated: October 18, 2026

Overview

Herpesan 2% Gel contains Carbenoxolone 2% and is presented as a gel. It is supplied in a pack size of 5g.

It is classified as a non-prescription medicine, so no prescription is needed to order it. Under Malaysian rules for medicine information, this page carries product, safety and handling information only.

You can consult a doctor or pharmacist online on DoctorOnCall about this product before or after you order. Every order is checked by a registered pharmacist before it is delivered. Always read the label and the leaflet supplied with the pack.

Directions for Use

Clean and dry the affected area of the mouth gently, then apply a small amount of Herpesan 2% Gel directly onto the ulcer or sore using a clean fingertip or cotton bud. Avoid eating or drinking for a short while after application so the gel can remain in contact with the ulcer. Wash hands before and after use.

Dosage

Herpesan 2% Gel is usually applied to the affected area two to four times a day, or as needed after meals and before bedtime, until the ulcer has healed. Do not use more often than directed on the packaging, and discontinue use once the ulcer has resolved.

Shelf Life

Herpesan 2% Gel is generally stable for up to 24 to 36 months from the date of manufacture when unopened and stored correctly. Always check the expiry date printed on the tube or carton before use, and discard the product if it has expired or if the tube has been open for an extended period.

Storage Instructions

Store Herpesan 2% Gel at room temperature, below 30 degrees Celsius, away from direct sunlight and moisture. Keep the tube tightly closed after each use, and keep out of reach of children.

Side Effects

Water retention or swelling (edema)
Headache
High blood pressure (hypertension)
Upset stomach or nausea
Muscle weakness
Changes in electrolyte balance (e.g., low potassium)

Contraindications

Known hypersensitivity to carbenoxolone or any ingredient in the gel
Not for use on broken skin outside the mouth or on deep, actively bleeding wounds
Use in young children only under the advice of a doctor or dentist
Discontinue and seek advice if the ulcer worsens or does not improve after prolonged use

Drug / Food Interactions

No clinically significant drug interactions are established for topical oral use
Avoid using other strong oral antiseptic or irritant products on the same area at the same time
Inform your pharmacist if you are using other mouth or dental gels concurrently
Avoid very hot, spicy, or acidic food and drink immediately after application, as this may reduce effectiveness

Quick Tips

Apply after meals and before bed for best contact time with the ulcer
Avoid rinsing the mouth vigorously straight after applying the gel
Maintain gentle oral hygiene with a soft toothbrush while an ulcer is present
See a doctor or dentist if the ulcer persists beyond two weeks or keeps recurring
Keep the tube nozzle clean to avoid contaminating the remaining product

Ingredients / Active Ingredients

Carbenoxolone

Carbenoxolone 2%

Safety Advice

Pregnancy

Not Advisable

Use during pregnancy is generally not recommended unless absolutely necessary.

Breastfeeding

Limited Data

Limited data on excretion in breast milk. Consult a doctor before use.

Kidney

Use With Care

Use cautiously. Dose adjustment or monitoring may be required.

Liver

Use With Care

Use cautiously. Liver function monitoring may be required.

Alcohol

Use With Care

Caution is advised when consuming alcohol with this medicine.

Driving

Generally Safe

This medicine is generally safe and should not impair your driving ability.

Relevant Information

Mouth ulcers are common and usually heal on their own within one to two weeks, but products like Herpesan 2% Gel can help ease discomfort and support the healing process in the meantime. Because it is applied only to a small area of the oral mucosa, systemic absorption of carbenoxolone is minimal when used as directed. Anyone with mouth ulcers that are unusually large, very painful, slow to heal, or occurring alongside other symptoms should seek further evaluation by a healthcare professional.