Terbinafine Tablets for Fungal Nail Infections

Terbinafine is an antifungal medicine used to treat infections caused by dermatophytes. It is available as oral tablets and topical products for skin. Ships from Canada to US for eligible orders, and you can compare options even if you are considering terbinafine without insurance.

What Terbinafine Is and How It Works

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This medicine belongs to the allylamine class. It inhibits squalene epoxidase, an enzyme fungi use to make ergosterol. Reduced ergosterol weakens cell membranes, which can lead to fungal cell death. The treatment concentrates in skin, nails, and hair, where many dermatophytes live.

Tablets are commonly prescribed for onychomycosis of the toenail or fingernail due to dermatophytes. Topical forms help treat tinea pedis (athlete’s foot), tinea cruris (jock itch), and tinea corporis (ringworm). It does not cover all yeast or mold infections; your prescriber will select therapy based on the organism and site.

Many patients know the reference brand as Lamisil. Generics contain the same active ingredient and are widely used. Discuss any history of liver disease, taste or smell disturbances, or serious skin reactions before starting therapy.

Who It’s For

The tablets are used for dermatophyte nail infection when your clinician confirms onychomycosis. The cream, gel, or spray may be recommended for athlete’s foot, jock itch, or ringworm on the body. For toenails, your prescriber may choose therapy based on severity and nail involvement. Some patients may receive terbinafine for toenail fungus when benefits outweigh risks.

Avoid use if you have chronic or active liver disease, a history of serious allergic reactions to this drug, or severe kidney impairment unless your clinician approves. Discuss pregnancy or breastfeeding status. Children may use certain topical forms, but tablet use depends on age and label guidance.

To learn more about causes and care for athlete’s foot, review our guide on Athletes Foot. For nail disease information and treatment options, see Fungal Nail Infection.

Dosage and Usage

Follow your prescriber’s directions and the product label exactly. The usual adult oral regimen uses a single daily dose. Typical duration is measured in weeks for fingernails and longer for toenails; your clinician will determine course length. Take the tablet at the same time each day with or without food.

Topical products are applied to clean, dry skin once or twice daily as directed. Cover the affected area and a small rim of surrounding skin. Wash hands after application. Keep the product out of eyes, mouth, and vaginal area.

Therapy adherence matters. Do not stop early without medical advice, even if symptoms improve. Nails grow slowly, so visible clearing takes time even after the fungus is controlled.

Strengths and Forms

Availability may vary by pharmacy and region. Common options include:

• Oral tablets: 250 mg strength
• Topical cream: terbinafine cream 1%
• Topical gel or spray: selected markets

Ask our team which presentations are currently offered for your prescription.

Missed Dose and Timing

If you miss a tablet dose, take it when you remember unless it is close to the next dose. If it is near the next dose, skip the missed dose and resume your schedule. Do not double up. For topical therapy, apply as soon as you remember and continue the regular plan.

Storage and Travel Basics

Store tablets and topical products at room temperature away from excess heat and moisture. Keep tubes or bottles tightly closed. Do not freeze topical forms. Protect from light when the label advises. Always keep medicines out of reach of children and pets.

When traveling, carry your medication in original packaging with the prescription label. Pack it in your hand luggage to avoid temperature extremes in checked bags. For extended trips, bring enough supply plus a small buffer as allowed by your prescriber, and a copy of your prescription for security or customs. Use child-resistant caps and secure storage if kids are present.

Benefits

This antifungal targets dermatophytes that commonly infect nails and skin. Oral therapy reaches the nail bed and may help eradicate the organism at the source. Topical forms can be convenient for localized tinea on the feet, body, or groin. Once-daily oral dosing and short topical courses can support adherence when directed by your clinician.

Side Effects and Safety

• Gastrointestinal upset: nausea, stomach pain, diarrhea
• Headache or mild fatigue
• Skin irritation with topical use: redness, itch, burning
• Taste changes or reduced taste
• Smell disturbance
• Rash or hives

Serious risks are uncommon but can include liver injury, severe skin reactions (e.g., Stevens-Johnson syndrome), allergic reactions, or blood dyscrasias. Stop the medicine and seek urgent care if you notice dark urine, yellowing of eyes or skin, severe rash, mouth sores, fever with rash, swelling, or trouble breathing. Your clinician may order liver function tests before or during therapy for oral treatment.

Drug Interactions and Cautions

This medicine inhibits CYP2D6. Drugs metabolized by CYP2D6 may be affected, including certain tricyclic antidepressants, SSRIs, SNRIs, beta blockers, antiarrhythmics, codeine, and tramadol. Warfarin, caffeine, and cyclosporine may also interact. Alcohol use may increase liver stress. Always tell your prescriber about all prescriptions, OTC products, and supplements.

Conditions such as diabetes can raise the risk of skin breaks and slow healing. For broader context on skin care and infection risk, explore our article on Fungal Infections. If you have wounds on the feet, discuss inspection routines and see our overview of Wound Healing.

What to Expect Over Time

Skin symptoms often improve before complete resolution of the infection. Nails grow slowly, so visual changes can lag behind organism clearance. Your clinician may advise finishing the full course and then monitoring nail growth. Consistent daily dosing and correct topical use can support outcomes.

If symptoms persist or worsen, contact your prescriber. They may reassess diagnosis, check adherence, or adjust the plan. Do not share antifungal medications with others.

Compare With Alternatives

The reference brand is available as Lamisil®, which contains the same active ingredient as generics. For certain fungal infections, another option may be Ketoconazole when appropriate. Your clinician may also consider itraconazole or fluconazole in selected cases based on organism and site.

Pricing and Access

Canadian pricing can offer meaningful savings for US patients. You can review the terbinafine price and compare presentations before you order. Check current availability and add the item to your cart to see options for quantity and refills. If you are looking for deals, visit our Promotions page for any current site-wide offers.

Many customers choose to buy terbinafine online after their prescriber recommends therapy. We provide clear listings so you can select the tablet or topical form prescribed. We process orders for US shipping from Canada once your prescription is verified.

Availability and Substitutions

Stock can vary by strength and form. If your item is unavailable, your prescriber may recommend a different presentation or an alternative antifungal. We cannot suggest changes to your regimen; please consult your clinician for substitutions.

Patient Suitability and Cost-Saving Tips

Good candidates include adults with confirmed dermatophyte nail infection for oral therapy, and patients with localized tinea for topical therapy. Those with active liver disease, significant renal impairment, or prior severe reactions may not be candidates. Discuss pregnancy, breastfeeding, and all medicines you take.

To save, ask your prescriber about multi-month supplies when appropriate. Align refills with follow-up visits so you do not run out. Setting calendar reminders and using auto-refill services where permitted can help maintain adherence. Compare tablet and topical pricing to choose the most economical option for your prescription.

For information on common conditions treated with topicals, review Ringworm resources. You can also browse our related categories like Dermatology and Infectious Disease for broader product context.

Questions to Ask Your Clinician

• Diagnosis confidence: how was the fungus confirmed?
• Therapy choice: tablet versus topical for my case?
• Course length: how long should I stay on treatment?
• Monitoring: do I need liver tests or follow-up visits?
• Drug interactions: are my current medicines compatible?
• Adjunct care: foot care, nail trimming, or hygiene tips?
• When to reassess: what signs mean I should contact you?

Authoritative Sources

For full prescribing information, see FDA DailyMed entries for tablets and topical products, the Health Canada database, or manufacturer resources. These official documents provide indication details, contraindications, and safety data.

• DailyMed: Terbinafine Tablets Prescribing Information
• DailyMed: Terbinafine Topical Cream Prescribing Information
• Health Canada Drug Product Database: Terbinafine Listings

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Medical disclaimer: This content is for informational purposes only and is not a substitute for professional medical advice.