Cancer Home > Side Effects of Morphine Sulfate ER
Notify your healthcare provider if you develop serious side effects of morphine sulfate ER, such as seizures, severe drowsiness, or confusion. In most cases, however, people tolerate the medication well and any side effects that occur are typically easy to treat. Common morphine sulfate ER side effects include constipation, nausea, and headaches. Other, less common side effects may include back pain, fever, and sexual side effects.
An Introduction to Side Effects of Morphine Sulfate ERAs with any medicine, morphine sulfate ER (Avinza®, Kadian®, MS Contin®, or Oramorph® SR) can cause side effects. However, not everyone who takes the medication will have problems. In fact, most people tolerate it quite well. If side effects do occur, in most cases, they are minor and either require no treatment or are easily treated by you or your healthcare provider.
Serious Morphine Sulfate ER Side EffectsSome side effects of this medication, while usually occurring infrequently, are potentially serious and should be reported immediately to your healthcare provider. These include, but are not limited to:
- The urge to take more morphine sulfate ER than prescribed or for a non-medical purpose
- Falling or unsteadiness
- Unusual changes in mood or behavior
- Severe constipation
- A slow heart rate (bradycardia)
- Difficulty passing urine
- Low blood pressure (hypotension)
- Slow or irregular breathing
- Severe drowsiness
- Signs of an allergic reaction, such as:
- An unexplained rash
- Swelling of the mouth or throat
- Difficulty breathing.