Side Effects Of Covid Booster Moderna. The most common side effects to expect after your moderna booster: Most side effects stop within 48 hours.
Getty images) the fda revealed the the most commonly reported side effects by individuals who received a booster dose of. Clinical trial data from the three manufactures found that the most common complaints after receiving a booster shot were injection site pain, fatigue, headaches and muscle pain. Most side effects stop within 48 hours.