Common Headache, Dizziness, Vomiting, Abnormal liver function tests, Nausea, Abdominal pain, Hair loss, Fever, Vertigo.

Expert advice for Dec Syrup
Do not take diethylcarbamazine:

If you have had a history of convulsions or epilepsy.
If you have kidney or heart problems.
If you are greater than 65 years of age.
If you are breast-feeding or pregnant.

Q. What is Dec used for?
Dec is used to treat parasitic worm infection and filariasis (elephantiasis), a disfiguring disease in which swelling of arms, legs or other body parts may occur. It is used to treat Bancroft's filariasis, eosinophilic lung, loiasis and river blindness (onchocerciasis).

Q. How does Dec work?
Dec belongs to a class of medicines known as anti-helminthics. It works by killing both the larval and adult forms of the parasitic worms that cause filariasis.

Q. Is Dec an antibiotic?
Dec is not an antibiotic. Dec belongs to a class of medicines known as anthelminthic agents.