Short answer: The most common prednisone side effects in men are trouble sleeping, mood changes, increased appetite and weight gain, fluid retention and higher blood sugar. MedlinePlus also lists decreased sexual desire, and the American Urological Association advises doctors to consider checking testosterone in men on chronic corticosteroids. Longer courses add risks such as bone thinning, infections, eye problems and adrenal suppression. Never stop prednisone suddenly: your prescriber will tell you how to lower the dose safely.
Key Takeaways
- Prednisone is a corticosteroid used for conditions such as arthritis, severe allergic reactions, multiple sclerosis, lupus and certain lung conditions. It is not the same as the anabolic steroids that bodybuilders use.[1][3]
- Shorter courses can cause insomnia, mood swings, increased appetite, fluid retention, upset stomach and raised blood pressure.[2][3]
- Longer use adds osteoporosis, infection risk, cataracts or glaucoma, muscle weakness and a rounded “moon face.”[2]
- “Decreased sexual desire” is on the official MedlinePlus side effect list, and chronic corticosteroid use is one of the situations where the AUA suggests measuring testosterone.[1][4]
- After longer use, your adrenal glands make less of their own steroid hormones, so the dose is usually lowered step by step rather than stopped.[1][2]
- Tell your prescriber about every supplement you take, and do not try to fix side effects on your own by stopping or changing the dose.[1]
What Prednisone Is and Why It Causes Side Effects
Prednisone belongs to a class of medicines called corticosteroids (also called glucocorticoids). MedlinePlus explains that it is used to replace steroids in people whose bodies do not make enough, and, in people with normal levels, to calm inflammation and the immune response in conditions such as arthritis, severe allergic reactions, multiple sclerosis, lupus and certain lung, skin, eye, kidney, blood and bowel conditions.[1]
Your adrenal glands naturally make cortisol, a steroid hormone.[3] Prednisone is a synthetic medicine in the same family, given at doses that act strongly on the body. That is why it is so effective against inflammation, and also why it reaches so many systems at once: appetite, sleep, mood, fluid balance, bone, muscle and blood sugar.
Cleveland Clinic draws a clear line between corticosteroids and anabolic steroids. Anabolic steroids are synthetic forms of testosterone; corticosteroids such as prednisone are not.[3] Many men are surprised to learn that prednisone, a “steroid,” can be linked with lower sexual desire rather than higher.
Short Course vs Long Course: Prednisone Side Effects Compared
Mayo Clinic stresses that side effects depend on the dose you take, and Cleveland Clinic notes that the chance of side effects rises the longer you take the medication.[2][3] A five day burst for a flare is a very different exposure from months of daily treatment. The table below sorts the main effects by when they tend to appear, based on the Mayo Clinic, MedlinePlus and Cleveland Clinic lists.
| Area | Short course (days to a few weeks) | Longer course (months or more) | What to ask your doctor |
|---|---|---|---|
| Sleep | Trouble sleeping (insomnia) | Ongoing sleep problems, tiredness | Whether a morning dose fits your plan |
| Mood and thinking | Mood swings, restlessness, anxiety, not thinking clearly | Depression; rarely confusion or loss of contact with reality (urgent) | Who to call if mood changes sharply |
| Weight and fluid | Increased appetite, fluid retention, swelling in the lower legs | Weight gain in the belly, face and back of the neck; rounded “moon face” | Diet and salt guidance during treatment |
| Blood sugar | Higher readings, especially in people with diabetes | High blood sugar that can start diabetes or make it worse | How often to check glucose |
| Blood pressure | High blood pressure | Ongoing high blood pressure | Home blood pressure monitoring |
| Bone and muscle | Not on the short term list | Osteoporosis, muscle weakness | Bone density testing, calcium and vitamin D |
| Infection and skin | Acne, upset stomach, heartburn | Higher infection risk, thin skin, easy bruising, slow wound healing | Vaccines and infection precautions |
| Eyes | Report any vision problems or eye pain | Cataracts or glaucoma | Eye checks during long treatment |
| Adrenal glands | Less concern with brief courses (follow your prescriber) | Adrenal glands make less of their own steroid hormones | Your exact tapering schedule |
| Sexual desire | Decreased sexual desire possible | Decreased desire; testosterone worth checking with chronic use | Whether a morning testosterone test makes sense |
Sources: Mayo Clinic for the short versus long term split, MedlinePlus for the full side effect list, Cleveland Clinic for blood sugar monitoring.[1][2][3] Timing varies between people, so use the table as a guide for questions, not as a prediction.
Prednisone, Sex Drive and Testosterone
This is the part most men search for quietly, so here is what the sources actually say.
What the official side effect list says
MedlinePlus lists “decreased sexual desire” among prednisone side effects that you should tell your doctor about if they are severe or do not go away.[1] It is not described as one of the most common effects, but it is a recognized one, so it is reasonable to raise it at your next appointment.
Does prednisone lower testosterone?
The American Urological Association’s testosterone deficiency guideline advises clinicians to consider measuring total testosterone in patients with chronic corticosteroid use, even when there are no symptoms or signs of testosterone deficiency.[4] In plain terms, long term steroid treatment is on the short list of situations where urologists think low testosterone is worth looking for. A brief course is a different situation, and the guideline statement refers to chronic use.
If testing is done, the same guideline sets a total testosterone level below 300 ng/dL as a reasonable cut-off and says the diagnosis should be made only after two measurements taken on separate occasions in the early morning.[4] Cleveland Clinic adds that illness can temporarily lower testosterone, which matters here: the condition being treated with prednisone can itself lower the result.[5] Our guides to the best time to check testosterone levels and normal testosterone levels explain how to read the numbers.
Other reasons drive can drop on prednisone
Low desire during treatment rarely has one single cause. Several of prednisone’s well documented effects can affect sexual interest indirectly:
- Poor sleep. Insomnia is one of the most common short term effects.[2] Sleep loss and drive are closely linked, as covered in our article on insomnia and testosterone.
- Mood changes. Mood swings, anxiety and, in some people, depression are listed effects.[1][3]
- Body changes. Weight gain in the face and belly, acne and fluid retention can affect confidence.[2]
- Fatigue and muscle weakness. Both appear on the longer term list.[2]
- The underlying illness. Pain, inflammation and flares of conditions such as arthritis, asthma or bowel disease drain energy on their own.
Cleveland Clinic lists low libido as one of the most specific symptoms of low testosterone, along with trouble getting or keeping an erection.[5] If you notice these, see our overview of signs of low testosterone and bring it up with your prescriber rather than guessing.
Never Stop Prednisone Abruptly: Why Tapering Matters
When you take corticosteroids by mouth for a longer time, your adrenal glands may make less of their own steroid hormones. To give them time to recover, your healthcare professional may lower your dose little by little.[2] Mayo Clinic notes that lowering too quickly can leave you tired, lightheaded and achy.[2]
MedlinePlus is direct: do not stop taking prednisone without talking to your doctor. If you stop suddenly, your body may not have enough natural steroids to function normally. Warning signs include extreme tiredness, weakness, slowed movements, upset stomach, weight loss, changes in skin color, mouth sores and craving salt.[1]
This matters for sexual side effects too. Some men are tempted to skip doses or quit early to “get their drive back.” That can be dangerous and can also let the underlying disease flare. The safe route is to tell your prescriber what you are experiencing and let them decide whether the dose, schedule or medicine can change. Mayo Clinic suggests asking whether a lower dose or an every other day schedule is an option.[2]
How to Lower Your Risk During Treatment
You cannot remove every side effect, but these steps from Mayo Clinic, MedlinePlus and Cleveland Clinic help you and your doctor catch problems early:
- Take it exactly as directed. Prednisone is usually taken with food, on the schedule your doctor sets.[1]
- Watch your blood sugar. Cleveland Clinic advises people with diabetes to check their blood sugar more often for around five days after starting a new steroid. For treatment lasting more than a few months, ask how often to check blood sugar, blood pressure and bone density.[3]
- Protect your bones. Ask whether you should take calcium and vitamin D to help protect your bones during long treatment.[2]
- Reduce infection risk. Prednisone may lower your ability to fight infection. Wash your hands often, avoid people who are sick, and do not get any vaccination without talking to your doctor.[1]
- Carry identification. After long term use, Mayo Clinic recommends wearing a medical alert bracelet.[2]
- Report mood changes early. Tell someone close to you that mood changes are a known effect, so they can speak up if they notice them.
When to Call Your Doctor
MedlinePlus lists symptoms that need an immediate call to your doctor, including vision problems or eye pain, signs of infection, seizures, depression, loss of contact with reality, confusion, irregular heartbeat, sudden weight gain, shortness of breath, swelling, and rash, hives or itching.[1]
Book a routine conversation with your prescriber if decreased sexual desire, poor sleep, weight gain or low mood persist. Tell them about any other conditions you have, especially diabetes, high blood pressure or emotional problems, which MedlinePlus asks patients to mention before starting.[1] If you also take other medicines known to affect hormones, such as opioid pain medicines, our article on opioids and low testosterone explains why that combination deserves a lab check.
Supplements while taking prednisone
Before adding any herbal product during steroid treatment, tell your prescriber and pharmacist about everything you take, including male vitality supplements. If you use Ultra Bann, bring the full label to your appointment; every ingredient and amount is listed on our Ultra Bann ingredients page. No supplement is a substitute for the treatment your doctor prescribed or for a supervised taper.
Frequently Asked Questions
What are the most common prednisone side effects in men?
Frequently reported effects include trouble sleeping, mood swings, increased appetite and weight gain, fluid retention, and higher blood pressure or blood sugar. Men and women share the same side effect list, which also includes decreased sexual desire.[1][2][3]
Can prednisone cause low libido?
Yes, it can. MedlinePlus lists decreased sexual desire as a prednisone side effect.[1] Sleep loss, mood changes and the illness being treated can add to it. Tell your doctor if it is severe or does not go away.
Does prednisone lower testosterone?
Long term corticosteroid use is one of the situations where the American Urological Association suggests checking total testosterone, even without symptoms.[4] If you have been on prednisone for a long time and notice low drive, ask whether two early morning testosterone tests make sense.
Will my sex drive come back after stopping prednisone?
The opened sources do not give a recovery timeline for sexual side effects. Many short term effects are tied to the dose, so discuss your taper plan and symptoms with your prescriber, and ask for a follow up check if low desire persists after treatment ends.
Is it safe to stop prednisone if the side effects bother me?
No, not on your own. Stopping suddenly can leave your body without enough natural steroids, causing extreme tiredness, weakness, upset stomach and other symptoms.[1] Your doctor can lower the dose gradually or adjust the plan.
References
- MedlinePlus (U.S. National Library of Medicine). Prednisone. Drug information, revised 2024.
- Mayo Clinic. Prednisone and other corticosteroids.
- Cleveland Clinic. Corticosteroids (Glucocorticoids).
- American Urological Association. Evaluation and Management of Testosterone Deficiency (2018, reviewed 2024).
- Cleveland Clinic. Low Testosterone (Male Hypogonadism).
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. This article is for information only and is not medical advice.
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