There are no timing tablets side effects if you take these pills as directed and if you are above 18 years of age. The reason being the timing table works by improving sperm quality and quantity, so timing tablets can harm your unborn child or cause miscarriages. Also, timing tablets increase blood flow to the penile area which makes your erections harder and firmer.
How oral medications differ
Although they work in similar ways, each oral medication has a slightly different chemical makeup. These minor differences affect the way each medication works, such as how quickly it takes effect and wears off, and the potential side effects. Your doctor will consider these factors as well as other conditions you have and possible interactions with other medications you take.
- Sildenafil (Viagra). This medication is most effective when taken on an empty stomach one hour before sex. It's effective for four to five hours or more if you have mild to moderate erectile dysfunction.
Vardenafil (Levitra, Staxyn). This medication also is most effective when taken one hour before sex and can be taken with or without food. A high-fat meal might keep it from absorbing as quickly.
Vardenafil is effective for four to five hours or more if you have mild to moderate erectile dysfunction. A newer form of the drug that dissolves on the tongue might work faster than the pill that you swallow.
- Tadalafil (Cialis). This medication is taken with or without food about one to two hours before sex. It's effective for up to 36 hours. It can be taken in a small dose daily or in a larger dose as needed.
- Avanafil (Stendra). This medication is taken with or without food 30 minutes before sex, depending on the dose. It lasts up to six hours.
Because these drugs are similarly effective, the American College of Physicians recommends that the choice be based on your preferences, including cost, ease of use, how long the drug's effects last and side effects. There are generic versions of sildenafil, vardenafil and tadalafil available.
When oral medications might not be safe
Before taking any medication for erectile dysfunction, get your doctor's OK. Medications for erectile dysfunction might not work or might be dangerous if you:
- Take nitrate drugs — commonly prescribed for chest pain (angina) — such as nitroglycerin (Nitro-Dur, Nitrostat, others), isosorbide mononitrate (Monoket) and isosorbide dinitrate
- Have very low blood pressure (hypotension) or uncontrolled high blood pressure (hypertension)
- Have severe liver disease
- Have kidney disease that requires dialysis
Side effects
Most men who take oral erectile dysfunction medications aren't bothered by side effects. When side effects do occur, they can include:
- Flushing
- Headache
- Indigestion
- Visual changes, such as blue tinge to vision, sensitivity to light or blurred vision
- Stuffy or runny nose
- Back pain
Rarely, more-serious side effects can occur, including:
- Hearing loss or vision loss. Some men have had sudden loss of hearing or loss of vision after taking one of these medications. However, it isn't clear whether vision or hearing loss was directly caused by taking the medication or by a preexisting condition. If you're taking an oral erectile dysfunction medication and have sudden loss of hearing or vision, seek prompt medical attention.
- An erection that doesn't go away on its own. Called priapism, this rare condition can be painful and requires medical treatment to avoid damage to your penis. If you have an erection that lasts more than four hours, seek immediate medical attention.
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