The most common side effects include headache, muscle soreness, confusion, and temporary loss of recent memory.

Symptoms include confusion, nausea, loss of appetite, and trouble with vision.

Overdose symptoms may include confusion, memory problems, drowsiness, and fast heart rate.

These can include weakness, numbness, confusion, or tingling of the face, hands, and feet.

Signs of hypothermia sometimes include confusion and lack of coordination.

Side effects may also include confusion, dry mouth, difficulty urinating, and blurred vision.

Uncommon side effects can include temporary hair loss, headaches, and confusion.

Some drugs have side effects that include delirium and confusion.

More serious symptoms include a stiff neck, confusion, and dizziness.

These symptoms usually include confusion and alteration of consciousness.