Terco-D — a combination cough tablet for wet cough from colds or bronchitis.
💊 Active ingredients: Dextromethorphan, Guaifenesin, Terpin Hydrate
⏱️ Usage: 1 tablet, 3-4 times a day
🍽️ Timing: With or without food
📦 Pack: 10 tablets/strip (orange/green)
⚡ Highlight: Suppresses cough + clears mucus in one tablet, budget-friendly
🌡️ Storage: Room temperature, away from sunlight and moisture
Terco-D is a combination cough tablet containing dextromethorphan, guaifenesin, and terpin hydrate. It suppresses the cough reflex while helping loosen and clear thick mucus from the airways. Available in orange and green tablets with the same formula, it comes in packs of 10 and is taken as directed on the label or by a pharmacist.
🛒 Pack of 10 tablets (orange/green) · authentic · 24-hour dispatch from Intimo Life — consult a doctor or pharmacist before use.
Product Description
Combination cough tablet Terco-D is a nonnarcotic tablet that combines its active ingredients in a single dose, suppressing cough and clearing mucus at the same time — suited for wet cough from colds or bronchitis.
📊 Key facts
3-ingredient formula — dextromethorphan suppresses the cough reflex, while guaifenesin and terpin hydrate help loosen mucus so it clears more easily
2 color options — orange and green tablets, same formula and active ingredients, differing only in color
Dosage — adults and children over 12 take 1 tablet, 3-4 times a day
Tablet form — easy to carry, no measuring needed like with cough syrup, convenient for taking on the go
🏭 Made by B.L. Hua Co., Ltd., a generic drug manufacturer long distributed in pharmacies across Thailand and commonly dispensed by pharmacists for everyday cough complaints.
⚠️ Terco-D is sold to customers aged 17 and over, with a limit on quantity per purchase.
Medically reviewed by
Supatcheree A., Pharmacist | Sources: MIMS, StatPearls, NHS
Last reviewed: 2026-08-10
About Terco-D
What Is Terco-D?
Terco-D is a nonnarcotic combination antitussive tablet made by B.L. Hua Co., Ltd. Its active ingredients are dextromethorphan, guaifenesin, and terpin hydrate, which work together in two ways: dextromethorphan acts on the brain's cough center to suppress the urge to cough, while guaifenesin and terpin hydrate help thin thick mucus so it clears more easily. Terco-D is available in two tablet colors, orange and green, sharing the exact same formula — the only difference is the tablet color.
What Is Terco-D Used For?
Terco-D is used to relieve productive (wet) cough, such as coughing caused by the common cold, flu, or bronchitis with thick mucus. Dextromethorphan reduces the frequency and severity of coughing, while guaifenesin acts as an expectorant that increases fluid in the airways to thin mucus and make it easier to clear. Terpin hydrate adds a further expectorant effect. Terco-D suits cough with mucus and is not intended for dry cough without mucus. Productive cough often sounds crackly or wet, or leaves a sensation of mucus stuck in the throat, unlike dry cough which has no such sound. Choosing a cough medicine that matches the type of cough helps improve the treatment outcome.
How to Take Terco-D & Dosage
Terco-D is intended for adults and children over 12 years old. The typical dose is 1 tablet, 3-4 times a day, and it can be taken with or without food. Do not adjust the dose yourself or take more than what is stated on the label or advised by a pharmacist. Drinking plenty of water can help guaifenesin and terpin hydrate work more effectively at loosening mucus. If a dose is missed, take it as soon as remembered, but if it is almost time for the next dose, skip the missed one — do not double up.
Side Effects of Terco-D
Possible side effects of Terco-D include mild drowsiness, headache, rash, nausea and vomiting, confusion, constipation, general GI disturbance, stomach pain, mild dizziness, and urticaria. These effects are usually mild and go away on their own as the body adjusts. Stop taking the medicine and consult a pharmacist or doctor immediately if a rash, difficulty breathing, or facial swelling occurs, as these may indicate an allergic reaction. Avoid driving or operating machinery while the medicine is active if you feel drowsy.
Contraindications & Precautions for Terco-D
Terco-D is sold only to customers aged 17 and over, with a limit on the quantity per purchase. It should not be used for chronic cough caused by smoking, emphysema, asthma, or cough with an unusually large amount of secretions. Do not use it together with MAO inhibitors or within 2 weeks of stopping one. It should not be used during pregnancy. Use with caution in people with severe liver or kidney disease, and do not use it if you are allergic to dextromethorphan, guaifenesin, terpin hydrate, or any other ingredient in the formula. Anyone with a history of allergy to other cough medicines should tell the pharmacist before buying, for safety.
Terco-D vs. Other Cough Medicines
Choosing the right cough medicine helps relieve symptoms more effectively and avoids unnecessary side effects. Several dextromethorphan-based cough medicines are available depending on symptoms:
Quick summary: Terco-D suits wet cough at the most economical price. Choose D-Coate for a stronger dose, Romivon for very thick mucus, or Patar Cap for dry cough without mucus.
Can Terco-D Be Taken With Other Medicines?
Avoid taking Terco-D together with other cough or cold medicines that also contain dextromethorphan, as this can lead to an unintentional overdose. Do not combine it with MAO inhibitors or use it within 2 weeks of stopping one, and use caution with alcohol as it may add to the central nervous system depressant effect. If you are currently taking other regular medications, tell the pharmacist before buying Terco-D so they can check whether it is safe to use together.
How Fast Does Terco-D Work?
The dextromethorphan in Terco-D begins suppressing the cough reflex within a short time after taking it, with the effect lasting several hours — which is why it is taken 3-4 times a day as directed to keep the cough under control throughout the day. Guaifenesin and terpin hydrate, which help clear mucus, usually take a bit longer to show a noticeable effect and work best with plenty of water. If the cough does not improve within 5-7 days of consistent use, or if a high fever develops, consult a doctor to check for an underlying cause. Cough caused by allergies or acid reflux may not respond as well to Terco-D as cough from a cold or bronchitis, so a doctor should be consulted if another underlying cause is suspected.
Where to Buy Terco-D?
Where to Buy Terco-D?
Order Terco-D online from Intimo Life, with nationwide delivery in Thailand within 1-3 business days. Packages are sealed discreetly with no product name shown on the shipping box.
There is no direct restriction on drinking tea or coffee with Terco-D. However, caffeine can stimulate the nervous system and increase the feeling of a racing heart in some people when combined with dextromethorphan, so cut back on caffeine if you feel jittery or can't sleep after taking it.
Taking more than the recommended dose of Terco-D can make side effects like dizziness, confusion, or drowsiness much more severe, and may cause nausea, vomiting, or a racing heartbeat from high-dose dextromethorphan. If this happens, seek medical attention immediately rather than waiting it out at home.
Once a Terco-D blister strip is opened, finish the course as directed rather than keeping loose tablets for long, since moisture and air can speed up degradation. Keep unopened strips in original packaging, away from direct sunlight, and check the expiry date before use.
Terco-D is sold only to customers aged 17 and over under store policy, so it is not recommended for children under 12. If a child has a productive cough, consult a doctor or pharmacist to choose a cough medicine formulated for their age and weight rather than an adult-strength product.
Terco-D does not typically cause a significant change in urine or stool color. If a noticeable change occurs, consider other causes such as diet, dehydration, or other medications, and consult a pharmacist or doctor if there is concern.
Terco-D is a tablet and does not list sugar as a main ingredient like some cough syrups do, but people with diabetes or other conditions should still tell the pharmacist before buying, so they can check it suits their health status and current medications.
Older adults can take Terco-D, but should be extra cautious since the body may be more sensitive to side effects like drowsiness or dizziness, especially with liver or kidney disease, or several other medications in use. Tell the pharmacist about all current medications before buying to avoid a harmful interaction.
Terco-D can generally be taken with antacids or common pain relievers such as paracetamol, since they work through different mechanisms. If other pain medicines with sedative effects are used, such as sleep aids or muscle relaxants, tell the pharmacist before buying so they can check whether combining them is appropriate.
Terco-D does not need to be refrigerated. Store it at room temperature in a dry place away from direct sunlight. Refrigerating it or keeping it humid may cause the tablets to absorb moisture and degrade faster, so avoid the fridge or a humid bathroom.
Related Products
Products with the same active ingredient or treating the similar condition.
NAC Long
D-Coate
Romivon
Patar Cap
Abhaibhubejhr Makhampom Herbal Cough Syrup 120 ml
