Is lamisil (terbinafine) effective against male yeast infection?

It can be used: Men with yeast infections may have burning or itching at the urethra (hole in the penis). There may be a red rash as well. Monistat or similar antifungal can be applied to the tip of the penis twice a day. If not resolving in a week, see physician.

Yes, BUT: Otc Miconazole (monistat) or Clotrimazole (lotrimin) is more effective for intertrigo or seborrheic dermatitis or balanitis. "yeast infection" not enough diagnosis. If you have a foreskin the important thing is to prevent any urine under the skin. Castellani solution usually resolves difficult cases.