Dosing InformationA safe and effective L-tyrosine dose has not yet been established. Be sure to follow the specific instructions on your particular product.
(Click L-Tyrosine Dosing for more information.)
Side Effects of L-TyrosineAlthough it is a "natural" product, L-tyrosine can still cause side effects. Some of the more commonly reported side effects include:
(Click L-Tyrosine Side Effects to learn more, including potentially serious side effects you should report immediately to your healthcare provider.)
Drug InteractionsL-tyrosine can interact with a few medications (see Drug Interactions With L-Tyrosine).
Is L-Tyrosine Safe?Some people may be more likely than others to experience problems with L-tyrosine. Therefore, you should talk with your healthcare provider before taking it if you have:
- Hyperthyroidism (an overactive thyroid)
- Graves' disease
- Phenylketonuria (PKU)
- Any allergies, including allergies to food, dyes, or preservatives.
Also, let your healthcare provider know if you are:
- Pregnant or thinking of becoming pregnant (see Tyrosine and Pregnancy)
- Breastfeeding (see Tyrosine and Breastfeeding).
Make sure to tell your healthcare provider about all the medicines you take, including prescription and non-prescription medicines, vitamins, and herbal supplements.
(Click L-Tyrosine Safety for more information, including any available warnings and precautions.)