D-Coate — a Dextromethorphan cough tablet, 20 mg dose, suppressing cough while clearing phlegm
💊 Active ingredients: Dextromethorphan HBr, Guaifenesin, Terpin Hydrate
⏱️ How to take: As directed on the label or pharmacist
🍽️ Take after meals with water
📦 Pack: 10 tablets, green coated tablet
⚡ Highlight: Only tablet in this group with a stated dose
🌡️ Storage: Below 30°C, away from sun and moisture
This tablet is a combination cough medicine containing Dextromethorphan HBr 20 mg to suppress the cough reflex, Guaifenesin 50 mg to thin and loosen mucus, and Terpin Hydrate 85 mg to help clear phlegm. It comes as a green coated tablet sold in packs of 10, and should be taken as directed on the label or by a pharmacist.
🛒 Pack of 10 tablets · authentic · 24-hour dispatch from Intimo Life — consult a doctor or pharmacist before use.
Product Description
Dextromethorphan combination cough tablet D-Coate is made by B.L. Hua Co., Ltd. as a green coated tablet combining three active ingredients in one dose, suppressing cough while clearing phlegm. It suits coughs with thick mucus that disrupt sleep or daily life, especially during weather changes or a lingering cold.
📊 Key facts
Dextromethorphan Hydrobromide 20 mg — acts on the cough centre to reduce cough frequency; not opioid-class, unlike codeine-based antitussives
Guaifenesin 50 mg — thins thick mucus so it clears with less coughing effort
Terpin Hydrate 85 mg — supports expectorant action, used in cough formulas for decades
Compared with Terco-D, which uses the same ingredients without mg on the label, this tablet states its dose clearly for anyone who wants to know the exact amount before buying
🏭 B.L. Hua Co., Ltd. is a long-established Thai generic maker, producing this formula in packs of 10 tablets that carry easily with no liquid to measure.
⚠️ Avoid combining with other CNS depressants or alcohol, and consult a doctor or pharmacist if you have chronic cough or asthma.
Medically reviewed by
Supatcheree A., Pharmacist | Sources: StatPearls, MedlinePlus, NHS UK
Last reviewed: 2026-08-10
About D-Coate
What is D-Coate?
D-Coate is a round, green coated cough tablet combining three active ingredients in one dose: Dextromethorphan Hydrobromide 20 mg, Guaifenesin 50 mg, and Terpin Hydrate 85 mg. It is made by B.L. Hua Co., Ltd., a Thai generic manufacturer with long experience in this class of cough medicine.
This tablet works through two mechanisms at once. The cough-suppressing ingredient acts on the brain's cough centre to reduce how often you cough, while the expectorant ingredients thin mucus so it clears more easily. Together these mechanisms suit cough with phlegm rather than dry cough alone, unlike single-ingredient medicines that only suppress cough.
What is D-Coate used for?
D-Coate relieves cough with phlegm from colds, bronchitis, or upper airway irritation. The cough-suppressing ingredient reduces how often you cough, while the expectorant ingredients loosen mucus so it clears more easily. It suits people whose cough feels like phlegm stuck in the throat, or lingering irritation after a cold.
This tablet does not treat the underlying cause of illness, such as infection, so use it mainly for symptom relief alongside rest and fluids. See a doctor — rather than self-medicating — if the cough lasts beyond a week, comes with high fever, or includes blood.
If cough occurs with nasal congestion or a sore throat, combine it with general self-care such as warm water, rest, and avoiding cold air or smoke.
When to Take D-Coate / Dosage
D-Coate should be taken as directed on the label or advised by a doctor or pharmacist. Do not exceed the stated dose — since this tablet combines several active ingredients, more than recommended may increase side-effect risk without resolving the cough any faster.
This class of tablet is generally taken after meals with plenty of water, helping the expectorant ingredients work better and reducing stomach irritation. Take it at consistent times, and consult a doctor rather than raising the dose yourself if symptoms persist.
Side Effects of D-Coate
Possible side effects of D-Coate include drowsiness, dizziness, nausea, dry mouth, or mild constipation, usually temporary and easing as the body adjusts. There is no need to stop immediately if symptoms are mild.
High doses, or combining with other CNS depressants, may increase drowsiness, so avoid driving or operating machinery if sleepy. Stop use and see a doctor right away if you notice allergic reactions such as rash, difficulty breathing, or swelling of the lips or face.
Most side effects are mild and uncommon at the recommended dose. If unusual symptoms persist for several days or worsen, stop use and consult a pharmacist about switching to a different cough formula.
Contraindications & Precautions
Do not use this tablet if allergic to dextromethorphan, guaifenesin, terpin hydrate, or any other ingredient, and avoid it with MAOI-class antidepressants, due to risk of a serious interaction such as a blood pressure spike or serotonin excess.
People with liver or kidney disease, or who are pregnant or breastfeeding, should consult a doctor first. Young children should not take it without a doctor's guidance, and alcohol should be avoided, as it raises CNS depressant effects and drowsiness risk.
Before starting, tell your doctor or pharmacist about any regular medications or supplements you take, to reduce interaction risk.
How Does D-Coate Compare to Other Cough Medicines?
The pharmacy carries several dextromethorphan-based cough formulas, each suited to different needs. Compare tablet form and label detail before choosing:
Terco-D — same ingredient group, but no exact mg on the label. More budget-friendly.
D-Coate — same combination as Terco-D but with clearly stated Dextromethorphan 20 mg, for those who want the exact dose.
Romivon — pairs dextromethorphan with bromhexine instead of guaifenesin, soft-gel form, for those who find tablets hard to swallow.
Patar Cap — dextromethorphan alone, no expectorant, for dry cough without phlegm.
In short: phlegm and want a clear dose — choose D-Coate · phlegm on a budget — choose Terco-D · trouble swallowing — choose Romivon · dry cough — choose Patar Cap
How Long Does D-Coate Take to Work?
Generally, dextromethorphan starts working shortly after being taken, with the effect lasting several hours per dose, so cough frequency drops fairly quickly. The expectorant ingredients work more gradually, and phlegm often feels easier to clear within 1-2 days of continued use.
How long the effect lasts varies by individual, depending on cough severity, phlegm amount, and overall health. See a doctor — rather than buying more on your own — if the cough doesn't improve within a week.
Taking it on time and consistently keeps drug levels stable, controlling cough symptoms better than irregular dosing.
Where Can I Buy D-Coate?
Where Can I Buy D-Coate?
Order online from Intimo Life with nationwide delivery across Thailand in 1-3 business days. Packages are discreetly sealed with no product name shown on the outside. Sold only to customers aged 17 and above, with a purchase limit per order for medication safety.
Before ordering, please read the label and product information on the page, or contact the Intimo Life team with any questions about how to use it.
If you forget a dose, take it as soon as you remember. If it is close to the next scheduled dose, skip the missed one — do not double up to make up for it, as this may increase the risk of side effects from excess active ingredients without making the cough resolve any faster.
Taking more than the recommended dose may cause severe drowsiness, dizziness, intense nausea and vomiting, or an abnormally fast heartbeat from excess cough-suppressing effect. If overdose is suspected, seek medical attention or call a poison control hotline immediately.
This is not an antibiotic. It only relieves cough symptoms and helps clear phlegm — it has no bacteria-killing action. If the cough is caused by a bacterial infection, an antibiotic prescribed by a doctor is needed alongside it; the two cannot substitute for each other.
You do not need to avoid coffee or tea completely, but it is wise to reduce caffeine intake, as caffeine may worsen sleeplessness or a racing heartbeat when combined with a nervous-system-active medicine.
Elderly people can take it, but should be more cautious about drowsiness and dizziness, which may increase the risk of falls. It is best to start with a lower dose and consult a doctor or pharmacist if any underlying conditions are present or several other medicines are already in use.
This tablet form is easy to carry with no dose to measure like syrup, and contains no sugar or alcohol, unlike some cough syrup brands — suited to those watching sugar intake or carrying medicine to work.
Taking it with certain allergy medicines may increase drowsiness, since some antihistamines also have a sedating effect on the nervous system. Consult a pharmacist before combining them and avoid driving after taking both.
Store it in a dry place at a temperature not exceeding 30°C, away from direct sunlight and moisture. Reseal the blister pack properly after each use, and always check the expiry date before taking a tablet.
It is better suited to cough with phlegm from colds or airway irritation than allergy-related cough, since it has no antihistamine action. For allergy-related cough, an antihistamine should be used alongside it, with guidance from a doctor on the actual underlying cause.
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