Laetrile/Amygdalin (PDQ®): Complementary and alternative medicine - Health Professional Information [NCI] - Adverse Effects
The side effects associated with laetrile treatment mirror the symptoms of cyanide poisoning. Cyanide is a neurotoxin that can cause nausea and vomiting, headache, Reviewed in  dizziness, Reviewed in cyanosis (bluish discoloration of the skin due to oxygen-deprived hemoglobin in the blood), liver damage,[4,5]hypotension (abnormally low blood pressure), Reviewed in [1,7]ptosis (droopy upper eyelid),[8,9]ataxic neuropathies (difficulty walking due to damaged nerves), fever, Reviewed in  mental confusion, coma, and death. Reviewed in [6,11,12]Oral laetrile causes more severe side effects than injected laetrile. These side effects can be potentiated (increased) by the concurrent administration of raw almonds or crushed fruit pits, by eating fruits and vegetables that contain beta-glucosidase (e.g., celery, peaches, bean sprouts, carrots),[5,13,14] Reviewed in [3,15] or by taking high doses of vitamin C.[5,16] Reviewed in 
The best way to prevent sprains or strains is to keep yourself in good physical shape so that your muscles, ligaments, and tendons are strong and flexible enough to resist trauma. To prevent recurring injury, ask your doctor or physical therapist for exercises designed to rehabilitate the muscles in the injured area.
You may benefit from a brace to protect the area while you are recovering from a recent injury. Use a brace for only a short period, because your muscles can get used to the support...