Bigfun 100 mg tablet relaxes blood vessels and helps increase blood flow to the penis. Some of the side effects of Bigfun 100mg tablet are flushing (redness and warmth), headache, upset stomach, dizziness, blurred vision, etc. These side effects usually go away on their own. If these side effects worsen or persist for a long time, please contact your doctor. Bigfun 100 Mg Tablet relaxes the blood vessels and helps in increasing the flow of blood to the penis. Some side effects of Bigfun 100 Mg Tablet include flushing (redness and feeling of warmth), headache, stomach upset, dizziness, blurred vision, etc. Usually, these side effects get resolved on their own. Consult your doctor if these side effects worsen or persist for a long time.  Bigfun 100 MG Tablet relaxes the blood vessels and helps in increasing the flow of blood to the penis. Some side effects of Bigfun 100 MG Tablet include flushing (redness and feeling of warmth), headache, stomach upset, dizziness, blurred vision, etc. Usually, these side effects get resolved on their own. Consult your doctor if these side effects worsen or persist for a long time.