Respiratory System

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Like any other living organism on Earth, a human needs oxygen. Several minutes without oxygen can be life-threatening for the human. Oxygen consumption is a vital activity, because it is involved in many processes in our body. In some amounts, oxygen penetrates the body through the skin surface. Read More →

How do you take sildenafil?

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Sildenafil can be used in a daily dosage ranging from 25mg to 100mg, but the dosage of 50mg is the optimal choice for most men. Take the drug 30-60 minutes before sexual intercourse. Its effects should last up to 4 hours.

If you are about to take this drug for the first time, it is recommended to take the minimum dosage. It is important to make sure that your body responses well to the treatment and no severe side effects occur. If you need to increase the effects of this ED medicine, you may change the dosage gradually.

If you wish that the drug to start working faster, you should use it on an empty stomach. Nevertheless, the drug can be used with or without food. You should swallow the tablets of sildenafil with some amount of water. It is also recommended to avoid drinking too much of alcohol because this may reduce the effectiveness of the drug and/or cause various side effects.

Another product that should be avoided when sildenafil is used is grapefruit juice because it may affect the level of the active ingredients in your blood, which increases the risk of side effects.


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Bodybuilding is one strong commitment. It takes a lot of effort and dedication. It requires you to abide by a definite diet and a definite workout schedule. It requires you to work on various parts of your body to ensure smooth and perfectly distributed bodybuilding. Read More →