Terbinafine 500 mg is an oral medicine belonging to the class of antifungal medicines and used for the treatment of all types of ringworm and yeast infections on skin caused by fungus.

More Common

1. Burning, stinging, itching, or tingling of treated skin (especially during the first few days of treatment)
2. Viral skin infection
3. Your skin being more sensitive to hot or cold temperatures
4. Acne, redness or crusting around your hair follicles
5. Upset stomach
6. Headache, muscle pain
7. Runny or stuffy nose
8. Fever, chills, body aches, sore throat, cough, swollen glands.

Less Common

1. Feeling very tired or weak  
2. Joint or muscle pain  
3. Dizziness  
4. Yellowing of skin or eyes (sign of liver problem)  
5. Dark-colored urine  
6. Severe skin rash or blisters  
7. Trouble breathing or swelling of face/lips

Terbinafine kills fungus by stopping it from making a substance called ergosterol. Without ergosterol, the fungus cannot build a strong wall to protect itself in human body. This makes the fungus weak, and it dies, clearing the infection.

Pregnancy or Breastfeeding

Tell your doctor if you are pregnant, planning to become pregnant, or breastfeeding, as this medicine may harm your baby.

Allergies

Tell your doctor if you have ever had any unusual or allergic reaction to terbinafine or any other antifungal medicine. Taking it again may cause serious allergies, rash, swelling, or breathing problems.

Kidney Problems

If your kidneys do not work well, this medicine may stay in your body for too long and cause harm, so inform your doctor so he may avoid or adjust the dose.

Liver Problems

Do not take this medicine if you have serious liver disease, as terbinafine is processed by the liver and may put additional strain on the liver, potentially worsening your liver problem.

Desonide does not interact with food products; usually it is applied on the skin only. So, it is safe to use without any fear of food interactions

Avoid taking Terbinafine 500 mg with the following medicines, as it may increase or decrease the desired effect, or in worse cases, it could be fatal:

IUPAC (International Union of Pure and Applied Chemistry)/ Chemical name

(2E)-6,6-dimethylhept-2-en-4-yn-1-yl(naphthalen-1-ylmethyl)amine.

Daily dose

Take Terbinafine exactly as your doctor recommends. The dose may change based on your condition and how well you respond. Do not take more than prescribed without consulting your doctor.

Missed Dose

 If you forget to take your medicine, take the medication as soon as you remember. If it’s nearly time for your next dose, skip the missed one and continue with your regular schedule. Always consult the doctor before making any changes to your dosage.

Overdose

Apply terbinafine tablet as per doctor’s instructions; do not consume orally. If ingested orally by mistake, overdose symptoms may occur, like nausea, irritations, and vomiting; excessive skin application causes marks on skin and burning sensations.

1. Store the medicine at room temperature 
2. Keep away from sunlight and moisture 
3. Keep out of reach of children 

1. Take terbinafine exactly as prescribed by your doctor, at the same time each day. 
2. Do not stop taking terbinafine without your doctor’s approval, even if you feel better. 
3. If you forget to take terbinafine, take it as soon as you remember. If it’s almost time for your next dose, skip the missed dose. 

Terbinafine 500 mg is an antifungal medicine used to treat nail infections and skin problems such as ringworms and athletes’ feet. It works by blocking ergosterol which is needed to build their protective cell wall, so they die off. Common side effects of this medicine are headaches, stomach upset, diarrhea, rash, and changes in taste. Taking this medicine with alcohol or with other medicines that affect the liver can make side effects worse. People with liver problems, kidney problems, or those allergic to terbinafine should inform their doctor before taking this medicine. Taking more than 1,000 mg can cause nausea, vomiting, stomach pain, dizziness, and liver damage.

What are the side effects of terbinafine tablets?

Common side effects of terbinafine include mild skin irritation, redness, itching, or burning when used as a tablet, and headache, stomach upset, or taste changes when taken orally.

How effective is a terbinafine tablet for ringworm?

Terbinafine tablets are highly effective for ringworm, often clearing the infection within 1 to 2 weeks by directly killing the fungus. Most people notice relief from itching and redness within a few days, but completing the full course prevents recurrence.

What is the mechanism of action of terbinafine?

Terbinafine works by inhibiting the fungal enzyme squalene epoxidase, which blocks the production of ergosterol, an essential component of the fungal cell membrane. This leads to a toxic buildup of squalene inside the fungus, causing its death and clearing the infection.

What is the drug class of terbinafine?

Terbinafine belongs to the allylamine class and belongs to the category of antifungal agents.

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