Tablets and medicines are being used widely for treating several diseases. There are a large number of tablets available for each and every disease. The dosage of each tablet varies upon the severity of disease. Same medicine combination will be available in several formats like soft tablets, pills, capsules, tablets, soft chews, oral jelly and many others. Erectile dysfunction is one of the sexual problems that require treatment through medicines. These medicines are available in online stores. Viagra is the most commonly used tablet for erectile dysfunction or impotency in men. You can buy Viagra soft tab online through online drug stores. This is an advanced and improved version of the common Viagra tablet. The composition of the Viagra soft tab is sildenafil which is same as the common Viagra. The difference between Viagra soft tab and Viagra is the taste and the effect of the tablet. Viagra soft tab has improved effect when compared to common Viagra. The tablet starts reacting within 3 to four minutes after intake which is very much faster than the normal Viagra which will usually react 15 to 20 minutes after the intake. You do not have to swallow this tablet since it is a soft tab. You can place it under your tongue since it is easily soluble, it starts reacting faster.