Hi,
Yes in few patients it may cause 
muscle cramps or spasm due to weakness or it may be a part of 
neuroleptic malignant syndrome. Fever, muscle, stiffness/pain/tenderness/weakness, severe 
tiredness, severe confusion, sweating, fast/irregular heartbeat, dark urine, signs of 
kidney problems (such as change in the amount of urine) are the symptoms of neuroleptic malignant syndrome. 
Please consult your treating doctor he will examine and treat you with alternate medicine. Sudden stopping of this drug lead rigidity, tremors etc.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. Penchila Prasad Kandikattu, 
Internal Medicine Specialist