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What is Phenylalanine?

D-Phenylalanine is an essential amino acid found in dietary supplements. Phenylalanine is also found naturally in plants, bacteria and the milk of mammals. It has analgesic properties since it promotes the natural production of endorphins. Hence, D-phenylalanine supplements are often recommended for dogs that have been diagnosed with early stage dog arthritis.

Effects of Phenylalanine

Some veterinarians consider D-phenylalanine as a safer alternative to prescription drugs. Right now, the standard for treating pain and inflammation related to dog arthritis is non-steroidal anti-inflammatory drugs or NSAIDs. These drugs work by suppressing pro-inflammatory COX-enzymes. Unfortunately, these enzymes also perform important functions in blood platelet production, stomach and intestinal protective lining and in the maintenance of good blood circulation through the kidneys.

NSAIDs, therefore, can sometimes cause side effects such as blood thinning, kidney failure and gastro-intestinal damage. Other prescription painkillers and anti-inflammatory drugs also have side effects. Although these drugs provide fast relief, it would be best to use these drugs only when necessary.

D-phenylalanine does not have these side effects as a dog’s system can easily metabolize it. It can be used long-term during treatment as an alternative or as an adjunct to a prescription medicine.

Vet’s Recommendations

There are many supplements on the market that contain D-phenylalanine. Be very careful when purchasing these supplements. Make sure it contains D-phenylalanine and not L-phenylalanine. The latter is not an effective analgesic, rather, it is an anti-depressant.

For a specific brand, Doctor’s Best D-phenylalanine is highly recommended. Doctor’s Best D-phenylalanine is available in 400, 500, and 600 milligram strengths. The capsules are made from modified cellulose and magnesium stearate.

Doctor’s Best is a supplement formulated for humans, but it is safe for dogs. The recommended dosage for humans is one or two pills daily in between meals. For the recommended dosage for dogs, consult your veterinarian.

As mentioned, D-phenylalanine is an amino acid found in plants, bacteria, and mammals. As it is organic, there are no side effects that might compromise your dog’s health. Nevertheless, D-phenylalanine should be avoided in lactating and pregnant dogs, dogs with high blood pressure and dogs that are being medicated with anti-depressants.

Doctor’s Best D-phenylalanine is a supplement and, therefore, does not require a vet’s prescription.

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