Suhagra 25 mg is a medication containing sildenafil citrate, commonly prescribed for the treatment of erectile dysfunction (ED) in men. Typically, the starting dose of Suhagra is 25 mg, but depending on various factors, some population groups may require higher doses. These factors include:

1. Severity of Erectile Dysfunction: Individuals with more severe erectile dysfunction may require higher doses of Suhagra to achieve the desired effect. The healthcare provider may titrate the dosage based on the response to treatment.
   
2. Underlying Health Conditions: Some health conditions, such as diabetes, cardiovascular disease, or neurological disorders, may affect the response to sildenafil citrate. Individuals with these conditions may require higher doses of Suhagra 25 mg to overcome the effects of their underlying health condition.
   
3. Age: Older individuals may metabolize medications differently than younger individuals. In some cases, older adults may require higher doses of Suhagra to achieve the same effect as younger adults.
   
4. Medication Interactions: Certain medications can interact with sildenafil citrate, potentially reducing its effectiveness. Individuals taking medications known to interact with sildenafil may require higher doses to achieve the desired effect.
   
5. Tolerance: Some individuals may develop tolerance to lower doses of sildenafil over time, necessitating higher doses to achieve the same effect. However, it's essential to use caution with dose escalation to minimize the risk of side effects.
   

It's crucial to consult with a healthcare provider before adjusting the dosage of Suhagra or any other medication. They can assess individual health factors and recommend the most appropriate dosage based on the specific needs and circumstances of the patient.