Allegra
Fexofenadine 120mg and 180mg film-coated tablets, used for seasonal allergic rhinitis and urticaria. A second-generation H1-receptor antagonist.
- Category
- Allergy Relief
- Active ingredient
- Fexofenadine
- Route
- Oral use
- Form
- Film-coated tablet
- Strengths
- 120 · 180mg
You will receive a quality generic equivalent, depending on stock.
No prescription needed: we place your order for Allegra on your behalf.
- Conditions
- Allergic Rhinitis · Urticaria
- Alternative names
- Telfast
- Therapeutic class
- Antihistamine
- Pharmacological class
- Second-Generation Antihistamine
- Contraindications
- hypersensitivity to fexofenadine
- Precautions and warnings
- avoid taking with fruit juices; generally non-sedating but caution is advised
- Minor side effects
- headache; drowsiness; nausea
- Moderate side effects
- dizziness; fatigue
- Dosage forms
- Film-coated tablet
- Administration route
- Oral use
- Originator
- Sanofi
- Onset Time
- 1 hour
- Duration
- 24 hours
- Storage instructions
- Store below 30°C.
- Drug interactions
- grapefruit juice; aluminium-containing antacids
- Age restrictions
- Not recommended for children under 12.
Serious side effects
anaphylaxis, requires immediate medical attention; angioedema, requires immediate medical attention; chest tightness, requires immediate medical attention
Patient summary
Fexofenadine 120mg and 180mg film-coated tablets, used for seasonal allergic rhinitis and urticaria. A second-generation H1-receptor antagonist.
Mechanism of action
Fexofenadine is a selective H1-receptor antagonist. It competes with histamine at central and peripheral H1-receptors, thereby inhibiting the allergic response without significant sedative effects associated with first-generation antihistamines.
Pregnancy and breastfeeding
Pregnancy: Consult healthcare provider. Breastfeeding: Consult healthcare provider.
Allegra is the branded version of fexofenadine, a common treatment used to manage symptoms of Seasonal Allergic Rhinitis and Urticaria. Often identified by the alternative brand name Telfast, it is available in tablet form with available strengths of 120mg and 180mg. It is a widely used choice for allergy relief in many households.
Buying Allegra online
Generic fexofenadine, much of it produced in India, is far more affordable than the original brand. This helps expats and residents in areas where consistent supplies are hard to source.
Do I get the original Allegra?
No. SGMeds ships a generic with the same active ingredient (fexofenadine) at the strength you choose, not the original Allegra made by Sanofi. We use the brand name so you can find the medicine, and the generic's manufacturer varies with stock.
What is Allegra for?
Allegra is used for allergic rhinitis and hives (urticaria).
How is Allegra priced?
Allegra comes in 120 and 180mg strengths, in packs of 10 to 240 tablets. Each option's price is shown on this page in Singapore dollars, converted from US dollars, so the exchange rate can change the final amount. Larger packs work out cheaper per tablet.
Payment and prices →What other brands contain the same active ingredient as Allegra?
In other countries, fexofenadine is also sold as Telfast.
What are the side effects of Allegra?
The most common side effects of fexofenadine are headache, drowsiness and nausea. Less common ones are dizziness and fatigue. Serious side effects include a severe allergic reaction (anaphylaxis), swelling of the face, lips or throat (angioedema) and chest tightness. Get medical help straight away if you notice one of these serious effects.
What does Allegra interact with?
Fexofenadine can interact with grapefruit juice and aluminium-containing antacids. Before you start Allegra, tell your doctor or pharmacist about any medicines, supplements or herbal remedies you take.
When does Allegra start to work?
Allegra usually starts to work within 1 hour, and the effect lasts about 24 hours. This varies from person to person.
Can I buy Allegra over the counter in Singapore?
Yes, online. SGMeds does not ask for a prescription to order Allegra: we place the order with our pharmacy partner, which prepares it and arranges delivery on your behalf.
Ordering without a prescription →Where can I buy Allegra in Singapore?
You can order Allegra here on SGMeds: choose the strength and pack, then check out. We deliver to Singapore and Malaysia. Express shipping is tracked and takes up to 1 week, and Regular shipping takes up to 3 weeks.
How ordering works →What you will receive
Allegra is the originator brand name, made by Sanofi. We use it here to identify the medicine only; we are not affiliated with Sanofi and do not ship the original Allegra.
- You receive a generic equivalent: the same active ingredient (Fexofenadine) at the same dose, mostly recognised Indian branded generics from vetted manufacturers.
- The exact brand supplied depends on what is in stock at the dispatching warehouse.
- A regulated generic matches the original ingredient for ingredient by legal standard.