Compare Diclofenac vs. Morphine sulfate

Head-to-head comparisons of medication uses, side effects, ratings, and more.

Zorvolex
(Diclofenac)

Ms Contin
(Morphine Sulfate)

Treats arthritis pain and swelling. Zorvolex (Diclofenac) is an okay medication used to treat pain and swelling caused by arthritis. However, because of the risk of heart attack, you should limit the amount you take.Treats severe pain. Ms Contin (Morphine Sulfate) provides good long-term pain control without the need to take medicine frequently, but watch out for constipation.
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Reviews & ratings
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Reviews for Ms Contin (Morphine Sulfate)
55%
45% vs. Zorvolex (Diclofenac)
43%
57% vs. Zorvolex (Diclofenac)
20%
20% vs. Zorvolex (Diclofenac)
Side effects
DiclofenacMorphine sulfate
  • Constipation 4%
  • Diarrhea 3%
  • Abdominal pain upper 2%
  • Pain in extremity 2%
  • Itching 1%
  • Swelling due to excess fluid 1%
  • Passing gas 1%
More Diclofenac side effects »

The Morphine sulfate FDA package insert doesn’t have numbers about how common side effects are.

More about Morphine sulfate side effects »
How it works
DiclofenacMorphine sulfate
Zorvolex (Diclofenac) is a non-steroidal anti-inflammatory drug (NSAID). It stops your body from making chemicals that cause inflammation and pain.Ms Contin (Morphine Sulfate) is an opioid medicine that works in the brain to lower pain perception.
Type of medication
DiclofenacMorphine sulfate
Pain reliever
Nonsteroidal anti-inflammatory drug (NSAID)
Prescription only
Pain reliever
Opioid
Prescription only
Available as
DiclofenacMorphine sulfate
  • Pill
  • Pill
  • Extended release
  • Oral solution
  • Liquid
  • Suppository
Used for (click to learn more)
DiclofenacMorphine sulfate
  • Osteoarthritis pain
Risk factors for serious side effects
DiclofenacMorphine sulfate
  • History of heart problems
  • High blood pressure
  • High cholesterol
  • Diabetes
  • Being overweight or obese
  • Smoking
  • History of stomach bleeding or ulcers
  • Age 65 years or older
  • Bleeding disorder
  • Taking other blood-thinning medications
  • Asthma
  • Rhinitis
  • Nasal polyps
  • Aspirin allergy
  • NSAID allergy
  • Kidney problems
  • Heart failure
  • Liver disease
  • Taking diuretics
  • Taking ACE inhibitors or angiotensin receptor blockers (ARBs)
  • Age 65 or older
  • History of high blood pressure
  • Taking water pills (diuretics)
Detailed Zorvolex (Diclofenac) risks & warnings »
  • Current use of medicine that affects liver enzyme CYP 3A4
  • Age 65 or greater
  • Higher dose
  • People with not enough thyroid hormones
  • History of lung problems
  • Children age 18 and younger
  • Long-term use during pregnancy
  • Taking more than the prescribed dose
  • Long-term use
  • History of drug abuse
  • Taking with alcohol
  • Taking other medicines that make you less alert
  • Age 65 or greater
  • Age 65 years or older
Detailed Ms Contin (Morphine Sulfate) risks & warnings »
Pregnancy category
DiclofenacMorphine sulfate
DFDA pregnancy category (Weigh risks vs. benefits)

Research studies with real people found harmful effects on unborn babies, but the benefits might outweigh the risks even if you’re pregnant. Talk with your doctor.

See the FDA package insert
CFDA pregnancy category (Weigh risks vs. benefits)

Research studies with animals found harmful effects on unborn babies. It hasn’t been properly studied in humans. The benefits might outweigh the risks even if you’re pregnant. Talk with your doctor.

See the FDA package insert
Alcohol
  • You should avoid alcohol while on Zorvolex (Diclofenac) since it can increase your risk of stomach issues.
  • Don't drink alcohol while using Zorvolex (Diclofenac).
No specific alcohol-related info.
Food
  • Take it with food to avoid getting diarrhea.
  • Take it with food to lower the chance of an upset stomach.
Kidneys and liver
  • If you're taking it on a regular basis, you'll need to get labs done to make sure your liver and kidneys aren't being affected.
  • Zorvolex (Diclofenac), and similar medications in the NSAID family, can lower kidney function or cause permanent kidney damage. Taking the lowest dose for the shortest amount of time necessary can lower your risk of kidney problems. It's important to get lab tests to check your kidney function periodically if you use Zorvolex (Diclofenac) for long periods of time.
No specific kidneys and liver-related info.
Sex
No specific sex-related info.No specific sex-related info.
Sleep
No specific sleep-related info.
  • Dizziness and drowsiness is common, but your body may adjust.
  • Can make you dizzy or drowsy.
Weight
No specific weight-related info.No specific weight-related info.
Upsides and benefits
DiclofenacMorphine sulfate
  • Clinical studies show that Zorvolex (Diclofenac) is better at relieving arthritis pain than acetaminophen (Tylenol).
  • Can be used as needed to treat pain and swelling.
  • Available as a generic.
  • Provides longer relieve for moderate to severe pain to improve quality of life.
  • Good for chronic pain that requires around-the-clock relief.
  • Might have fewer side effects than other opioid pain relievers.
Downsides and risks
DiclofenacMorphine sulfate
  • You should avoid alcohol while on Zorvolex (Diclofenac) since it can increase your risk of stomach issues.
  • If you're taking it on a regular basis, you'll need to get labs done to make sure your liver and kidneys aren't being affected.
  • Doesn't work for as-needed or quick pain relief.
  • Dizziness and drowsiness is common, but your body may adjust.
  • Everyone will get constipation - always stay hydrated and take stool softener or stimulant on days you're taking Ms Contin (Morphine Sulfate) if you need.
  • Long term use will likely cause physical dependence.
  • Must be weaned slowly off the medicine after use longer than 2 weeks.
Tips from our pharmacists for people taking the medication
DiclofenacMorphine sulfate
  • Take it with food to avoid getting diarrhea.
  • Don't drink alcohol while using Zorvolex (Diclofenac).
  • Don't take other anti-inflammatory medications (NSAIDs) without talking to your doctor or pharmacist.
  • Can cause swelling in your legs, abdominal pain, constipation, diarrhea, and an upset stomach.
  • Don't take antacids with magnesium since they can interact with Zorvolex (Diclofenac).
  • Take Zorvolex (Diclofenac) at the smallest dose possible for the shortest amount of time to prevent an increased risk of heart attack.
  • Opioid pain medicine that provides longer pain relief—up to 12 hours.
  • Works best when taken regularly instead of as-needed.
  • Especially useful for people with chronic pain problems.
  • May not be the best choice for people who have never taken an opioid pain medicine because it lasts so long.
  • Swallow it whole. Don't crush, chew, or split the medicine.
  • Can make you dizzy or drowsy.
  • Avoid activities that need you to be fully alert until you know how it affects you.
  • Take it with food to lower the chance of an upset stomach.
  • Constipation is common and may not go away while you're taking this medicine. Drinking lots of water and taking laxatives can help.
  • Talk to your doctor if it doesn't help enough for your pain, or if the side effects are really bad.
Learn more
More about DiclofenacSide effectsReviews & ratingsAlternativesFDA package insert
More about Morphine sulfateSide effectsReviews & ratingsAlternativesFDA package insert