Silditop 100 is a medication that contains Sildenafil, which is commonly used to treat erectile dysfunction (ED). In most countries, medications like Silditop 100 can only be prescribed by licensed healthcare professionals such as:

1. Doctors (MDs or DOs) - General practitioners, urologists, or specialists in sexual health may prescribe Sildenafil after assessing the patient's health needs.
   
2. Urologists - Since Silditop 100 mg is often used to treat erectile dysfunction, urologists (who specialize in the urinary tract and male reproductive system) are often the healthcare providers who prescribe it.
   
3. Sexual Health Specialists - Healthcare providers specializing in sexual health or reproductive medicine may also prescribe this medication.
   
4. Clinics or Hospitals - In some cases, sexual health clinics or hospital-based specialists can issue a prescription for Silditop 100 after a consultation.
   

It is important that the medication is prescribed by a qualified healthcare provider, as it requires a proper diagnosis and may interact with other health conditions or medications. Always consult a healthcare provider before using such medications.