1. Effectiveness: Taking Gestofit SR 200 mg instead of the prescribed 400 mg may reduce the medication's effectiveness, potentially leading to less symptom relief.

2. Safety: A lower dose is generally safer in terms of side effects but may not adequately control your condition.

3. Recommendation: Follow your prescribed dose or consult your healthcare provider before making changes. They can determine if a lower dose is suitable for your health needs.

If symptoms persist or worsen, contact your doctor promptly. Always seek professional guidance before adjusting medication doses.