Pharmacy conversational words to help you 
Sàwàtdii kâ
Nobody wants to be sick but many times it happens. Sometimes you need to go to the hospital but sometimes if you are just feeling unwell you can go to the pharmacy instead.
Thai Pharmacy | Chemist Phrases and Vocabulary
ร้านขายยา /ráan-kǎai-yaa/ = pharmacy
ยา /yaa/ = medicine
แก้ /gɛ̂ɛ /= to fix, to cure
ยาแก้ / yaa-gɛ̂ɛ/ + symptoms = medicine which cures that symptom
ปวด /bpùat/ = pain, hurt
ยาแก้ปวด /yaa-gɛ̂ɛ -bpùat/= Painkiller
ปวดท้อง /bpùat- tɔ́ɔng/ = stomach ache
ยาแก้ปวดท้อง /yaa-gɛ̂ɛ-bpùat- tɔ́ɔng/= stomach ache medicine
ปวดหัว /bpùat-hǔa/= headache
ยาแก้ปวดหัว /yaa-gɛ̂ɛ -bpùat-hǔa /= headache medicine
ไอ /ai/ = cough
ยาแก้ไอ /yaa-gɛ̂ɛ -ai/ = cough syrup
หวัด /wàt/ = a cold
ยาแก้หวัด /yaa-gɛ̂ɛ -wàt/ = cold medicine
คัน /kan/ = itchy
ยาแก้คัน /yaa-gɛ̂ɛ -kan/ = antipruritic
The magic word when you would like to ask for something is ขอ / kɔ̌ɔ/+ _______ = May I have ______?
So if you would like to have cough syrup, you can say:
ขอยาแก้ไอค่ะ/ครับ /kɔ̌ɔ yaa-gɛ̂ɛ -ai kâ (kráp)/ = May I have cough syrup?
Hope this blog is useful for you.
ao yaa à-rai ká? (What kind of medicine do you want?)
Doctor Jang is ready to help you!
Jang
Thai Language Teacher