What is the medication for a low sperm count? I know a few tips such as no alcohol, wear boxer underpants, no hot water baths, no smoking, etc....

To first consider the treatment for low sperm count, you and your doctor must first look at the possible cause of the low sperm count.  There are many reasons including varioceles (ruptured or twisted veins), damaged sperm ducts, genetic reasons, hormonal problems, substance abuse, being overweight or certain medications even, like certain cancer treatments.

After determining the cause of the low sperm count then you and your doctor can determine the best overall treatment including surgery, hormone treatment or even antibiotics.

Here is a link to a MayoClinic site that goes into depth about low sperm count and its prevention and treatment.