I'm sorry to hear about your calf muscle pain after climbing so many steps. Brufen 600 Tablet contains ibuprofen, which is a nonsteroidal anti-inflammatory drug (NSAID) commonly used to relieve mild to moderate pain and inflammation, including muscle pain.

Important points to consider before taking Brufen 600:

• It should be taken as prescribed by a doctor.
• Avoid taking it for more than 10 days without medical advice.
• Possible side effects include indigestion, dizziness, and stomach irritation.
• It may increase the risk of stomach ulcers or bleeding, so it’s best taken with food.
• Avoid alcohol while using this medication.
• If you have any underlying health conditions or are pregnant or breastfeeding, consult your doctor first.

For muscle pain after physical exertion, you can also try:

• Resting and elevating the leg.
• Applying a warm compress or gentle massage.
• Staying hydrated and doing gentle stretching.

If the pain persists, worsens, or is accompanied by swelling, redness, or difficulty walking, please consult an orthopedic specialist promptly to rule out any serious injury.

Recommendation: Before taking Brufen 600 Tablet, please consult an orthopedic doctor to ensure it is safe and appropriate for your situation.To narrow down potential causes, we will need some more information.I understand you're having calf pain after climbing steps and are wondering about taking Brufen 600. Please tell me your age and gender so I can assist you better.