Hi, varicocele is known to cause low sperm count, poor motility, poor morphology and any combination of these 3. When your semen analysis reports consistently show any of these diminished parameters in the presence of varicocele, surgical repair of varicocele is recommended - even if you do not have pain or discomfort. If neglected, sometimes irrevocable loss of spermatogenesis might occur.
Certainly, varicocele will not vanish with medicines.
Smoking is a big enemy to spermatozoa and I encourage you to stop it, altogether.
Next Steps
To consult a urologist for vx repair.