All are true about levamisole EXCEPT :
Levamisole is an immunomodulator acting as immunostimulant at low doses and immunodepressant at high doses.
It was used as anti-helminthic and causes depolarization by stimulating nicotinic receptors.
It is used for the treatment of colorectal carcinoma in combination with 5-FU.
It is slow to act in psoriasis and requires two-day therapy per week for prolonged periods.
Act as an immunostimulator
Act as an immunodepressor in high doses
Single dose is sufficient for the treatment of psoriasis
Acts as antihelminthic by causing depolarization