12 doctors weighed in:

Is there a connection between taking vitamin B12 and the risk of blood clots?

12 doctors weighed in
Dr. Ted King
Phlebology
6 doctors agree

In brief: No

It was thought that B12 supplementation would help to reduce elevated homocysteine levels and reduce the risk of arterial and venous clotting that can be associated with too much homocysteine.
We now know that isn't the case. B12 should have no effect.

In brief: No

It was thought that B12 supplementation would help to reduce elevated homocysteine levels and reduce the risk of arterial and venous clotting that can be associated with too much homocysteine.
We now know that isn't the case. B12 should have no effect.
Dr. Ted King
Dr. Ted King
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Dr. Rafael Lugo
Surgery
2 doctors agree

In brief: Specialty

None that i know, but you may want to ask a hematologist or internist.

In brief: Specialty

None that i know, but you may want to ask a hematologist or internist.
Dr. Rafael Lugo
Dr. Rafael Lugo
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2 doctors agree

In brief: Yes

Vit b 12 is essential and safe vitamin in therapeutic doses, but excessive levels or deficiency may cause thrombosis of blood vessels and cause'clots'.
In diabetics use of metaformin may interfere with Amino Acid homocystein metabolism and lowers B12 level and trigger vascular thrombosis, excessive levels may thicken the blood ( polycythemia) and may cause clotting.

In brief: Yes

Vit b 12 is essential and safe vitamin in therapeutic doses, but excessive levels or deficiency may cause thrombosis of blood vessels and cause'clots'.
In diabetics use of metaformin may interfere with Amino Acid homocystein metabolism and lowers B12 level and trigger vascular thrombosis, excessive levels may thicken the blood ( polycythemia) and may cause clotting.
Dr. Addagada Rao
Dr. Addagada Rao
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