Thanks for requesting me.
Alprostadil is a prostaglandin analog and FDA approved for local penile injection treatment.
Alprostadil also is available in pellet format which can be inserted into the urethra for similar effect.
Action starts within 15 minutes lasting about 2-3 hours usually very effective.
However, this is prescription only product but still can be purchased online with your doctor's prescription from reliable pharmacies for cheaper cost.
Nonprescription products are not regulated, not tested for their purity and potency and hence not recommended since injections are more dangerous if something goes wrong.
There is another compounded medication that is favored by some urologists including in Boston Medical center.
This is known as Trimix ( different from the herbal one ) -- combination of phentolamine, papaverine and alprostadil --supposed to be more potent action and prepared by the compounding pharmacies.
Penile vaccum pump is another a device based non pharmacological option available without prescription.
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