January
2004
Q. Can L-arginine and Viagra be taken together?
A. Though the sexual benefits of using Viagra and L-arginine
are similar, their mechanisms of action differ. Both Viagra
and L-arginine carry contraindications (cautions/warnings)
for use. Improperly formulated L-arginine formulas can cause
mild to severe medical problems. Viagra users are cautioned
not to use nitrates and nitrites in conjunction with Viagra.
Nitrates are indiscriminate on venous pooling and arterial
compliance, but arginine is utilized where its mechanism of
action is required. Therefore, it is not likely that arginine
would cause hypotension when taken with Viagra, but not totally
impossible, particularly when other medications (such as nitroglycerin)
are used which disrupt homeostatic blood pressure mechanisms
and when there is pre-existing severe coronary and/or cardiovascular
disease.
The current published DRUG INTERACTIONS state "At this
time, there are no well-known drug interactions with arginine."
Bottom Line
Until further data is available, it is best to avoid taking
Viagra at the same time as L-arginine. Caution would dictate
taking L-arginine at least 2 hours apart from ingesting Viagra.
Consult with your physician for further instruction.
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