Secondary effects associated with Generic Viagra tend to be mild; however as with any other treatment they are not suitable for everyone and should not be taken without precaution.

Common mild side effects include:
* Blurred or color tinged vision and/or sensitivity to light
* Acid indigestion
* Diarrhea
* Headaches.

Male person should not take Generic Viagra if:
* Male person are taking any nitrate based drugs
* Male person use any recreational drugs containing amyl or butyl nitrate, like “poppers”
* Male person suffer from any active heart disease or have had a stroke in the previous 6 months

Male person should take precautions and tell your doctor or pharmacist if:
* Male person have any history of penis related conditions
* Male person have any blood cell disorders
* Male person are taking any alpha-blocker medications
* Male person are taking any other medications for impotence or HIV inhibitors
* Male person suffer from any eye diseases or have ever experienced severe loss of vision
* Male person suffer from any kidney or liver diseases
* Male person suffer from very high or very low blood pressure

Allergic reactions to Generic Viagra are very rare, however if male person develop a reaction or experience any change in your response to Generic Viagra, stop taking them immediately and seek advice from a doctor.

Also if you are taking alpha blockers no more than 35 mg of ED Sample Pack should be taken within 6 hours of your alpha blocker dose. Under no circumstances should ED Sample Pack be taken more than once a day. ED Sample Pack should not be taken by women or by children under the age of 18.
Precaution before ED Sample Pack: ED Sample Pack must be used under doctor supervision. It is strongly recommended that you seek medical advice to establish if your heart is healthy enough for sexual activity. Most importantly ED Sample Pack should never be taken if you take any medicines that contain nitrates.

Possible secondary effects of ED Sample Pack: Under normal circumstances, side effects are mild and can include upset stomach, headache and facial flushing. Other possible common secondary’s effects are very sensitivity to light and a bluish vision.