Which is safer: metoprolol succinate or tartrate?

Metoprolol succinate and metoprolol tartrate contain the same active drug, metoprolol. The only difference is the salt form. Similar side effects may occur. These include:

• Dizziness
• Tiredness
• Decreased heart rate
• Decreased blood pressure
• Depression
• Diarrhea
• Rash
• Feeling short of breath
• Worsening heart failure or chest pain
• Risk of heart attack or worsening chest pain if metoprolol is stopped abruptly